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pattern.c
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/**
* @file
* Match patterns to emails
*
* @authors
* Copyright (C) 1996-2000,2006-2007,2010 Michael R. Elkins <[email protected]>, and others
*
* @copyright
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stddef.h>
#include <ctype.h>
#ifdef ENABLE_NLS
#include <libintl.h>
#endif
#include <limits.h>
#include <regex.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <time.h>
#include <unistd.h>
#include <wchar.h>
#include <wctype.h>
#include "mutt.h"
#include "pattern.h"
#include "address.h"
#include "body.h"
#include "context.h"
#include "copy.h"
#include "envelope.h"
#include "globals.h"
#include "group.h"
#include "header.h"
#include "lib/lib.h"
#include "list.h"
#include "mailbox.h"
#include "mutt.h"
#include "mutt_curses.h"
#include "mutt_menu.h"
#include "mutt_regex.h"
#include "ncrypt/ncrypt.h"
#include "opcodes.h"
#include "options.h"
#include "protos.h"
#include "state.h"
#include "thread.h"
#ifdef USE_IMAP
#include "imap/imap.h"
#include "mx.h"
#endif
#ifdef USE_NOTMUCH
#include "mutt_notmuch.h"
#endif
/**
* enum EatRangeError - Error codes for eat_range_by_regexp()
*/
enum EatRangeError
{
RANGE_E_OK,
RANGE_E_SYNTAX,
RANGE_E_CTX,
};
static bool eat_regexp(struct Pattern *pat, struct Buffer *s, struct Buffer *err)
{
struct Buffer buf;
char errmsg[STRING];
int r;
char *pexpr = NULL;
mutt_buffer_init(&buf);
pexpr = s->dptr;
if (mutt_extract_token(&buf, s, MUTT_TOKEN_PATTERN | MUTT_TOKEN_COMMENT) != 0 || !buf.data)
{
snprintf(err->data, err->dsize, _("Error in expression: %s"), pexpr);
return false;
}
if (!*buf.data)
{
snprintf(err->data, err->dsize, "%s", _("Empty expression"));
return false;
}
if (pat->stringmatch)
{
pat->p.str = safe_strdup(buf.data);
pat->ign_case = mutt_which_case(buf.data) == REG_ICASE;
FREE(&buf.data);
}
else if (pat->groupmatch)
{
pat->p.g = mutt_pattern_group(buf.data);
FREE(&buf.data);
}
else
{
pat->p.rx = safe_malloc(sizeof(regex_t));
r = REGCOMP(pat->p.rx, buf.data, REG_NEWLINE | REG_NOSUB | mutt_which_case(buf.data));
if (r)
{
regerror(r, pat->p.rx, errmsg, sizeof(errmsg));
mutt_buffer_printf(err, "'%s': %s", buf.data, errmsg);
FREE(&buf.data);
FREE(&pat->p.rx);
return false;
}
FREE(&buf.data);
}
return true;
}
/**
* get_offset - Calculate a symbolic offset
*
* Ny years
* Nm months
* Nw weeks
* Nd days
*/
static const char *get_offset(struct tm *tm, const char *s, int sign)
{
char *ps = NULL;
int offset = strtol(s, &ps, 0);
if ((sign < 0 && offset > 0) || (sign > 0 && offset < 0))
offset = -offset;
switch (*ps)
{
case 'y':
tm->tm_year += offset;
break;
case 'm':
tm->tm_mon += offset;
break;
case 'w':
tm->tm_mday += 7 * offset;
break;
case 'd':
tm->tm_mday += offset;
break;
default:
return s;
}
mutt_normalize_time(tm);
return (ps + 1);
}
static const char *get_date(const char *s, struct tm *t, struct Buffer *err)
{
char *p = NULL;
time_t now = time(NULL);
struct tm *tm = localtime(&now);
t->tm_mday = strtol(s, &p, 10);
if (t->tm_mday < 1 || t->tm_mday > 31)
{
snprintf(err->data, err->dsize, _("Invalid day of month: %s"), s);
return NULL;
}
if (*p != '/')
{
/* fill in today's month and year */
t->tm_mon = tm->tm_mon;
t->tm_year = tm->tm_year;
return p;
}
p++;
t->tm_mon = strtol(p, &p, 10) - 1;
if (t->tm_mon < 0 || t->tm_mon > 11)
{
snprintf(err->data, err->dsize, _("Invalid month: %s"), p);
return NULL;
}
if (*p != '/')
{
t->tm_year = tm->tm_year;
return p;
}
p++;
t->tm_year = strtol(p, &p, 10);
if (t->tm_year < 70) /* year 2000+ */
t->tm_year += 100;
else if (t->tm_year > 1900)
t->tm_year -= 1900;
return p;
}
/* The regexes in a modern format */
#define RANGE_NUM_RX "([[:digit:]]+|0x[[:xdigit:]]+)[MmKk]?"
#define RANGE_REL_SLOT_RX "[[:blank:]]*([.^$]|-?" RANGE_NUM_RX ")?[[:blank:]]*"
#define RANGE_REL_RX "^" RANGE_REL_SLOT_RX "," RANGE_REL_SLOT_RX
/* Almost the same, but no negative numbers allowed */
#define RANGE_ABS_SLOT_RX "[[:blank:]]*([.^$]|" RANGE_NUM_RX ")?[[:blank:]]*"
#define RANGE_ABS_RX "^" RANGE_ABS_SLOT_RX "-" RANGE_ABS_SLOT_RX
/* First group is intentionally empty */
#define RANGE_LT_RX "^()[[:blank:]]*(<[[:blank:]]*" RANGE_NUM_RX ")[[:blank:]]*"
#define RANGE_GT_RX "^()[[:blank:]]*(>[[:blank:]]*" RANGE_NUM_RX ")[[:blank:]]*"
/* Single group for min and max */
#define RANGE_BARE_RX "^[[:blank:]]*([.^$]|" RANGE_NUM_RX ")[[:blank:]]*"
#define RANGE_RX_GROUPS 5
/**
* struct RangeRegex - Regular expression representing a range
*/
struct RangeRegex
{
const char *raw; /**< regexp as string */
int lgrp; /**< paren group matching the left side */
int rgrp; /**< paren group matching the right side */
int ready; /**< compiled yet? */
regex_t cooked; /**< compiled form */
};
/**
* enum RangeType - Type of range
*/
enum RangeType
{
RANGE_K_REL,
RANGE_K_ABS,
RANGE_K_LT,
RANGE_K_GT,
RANGE_K_BARE,
/* add new ones HERE */
RANGE_K_INVALID
};
static struct RangeRegex range_regexps[] = {
[RANGE_K_REL] = {.raw = RANGE_REL_RX, .lgrp = 1, .rgrp = 3, .ready = 0 },
[RANGE_K_ABS] = {.raw = RANGE_ABS_RX, .lgrp = 1, .rgrp = 3, .ready = 0 },
[RANGE_K_LT] = {.raw = RANGE_LT_RX, .lgrp = 1, .rgrp = 2, .ready = 0 },
[RANGE_K_GT] = {.raw = RANGE_GT_RX, .lgrp = 2, .rgrp = 1, .ready = 0 },
[RANGE_K_BARE] = {.raw = RANGE_BARE_RX, .lgrp = 1, .rgrp = 1, .ready = 0 },
};
#define KILO 1024
#define MEGA 1048576
#define HMSG(h) (((h)->msgno) + 1)
#define CTX_MSGNO(c) (HMSG((c)->hdrs[(c)->v2r[(c)->menu->current]]))
#define MUTT_MAXRANGE -1
/* constants for parse_date_range() */
#define MUTT_PDR_NONE 0x0000
#define MUTT_PDR_MINUS 0x0001
#define MUTT_PDR_PLUS 0x0002
#define MUTT_PDR_WINDOW 0x0004
#define MUTT_PDR_ABSOLUTE 0x0008
#define MUTT_PDR_DONE 0x0010
#define MUTT_PDR_ERROR 0x0100
#define MUTT_PDR_ERRORDONE (MUTT_PDR_ERROR | MUTT_PDR_DONE)
#define RANGE_DOT '.'
#define RANGE_CIRCUM '^'
#define RANGE_DOLLAR '$'
#define RANGE_LT '<'
#define RANGE_GT '>'
/**
* enum RangeSide - Which side of the range
*/
enum RangeSide
{
RANGE_S_LEFT,
RANGE_S_RIGHT
};
static const char *parse_date_range(const char *pc, struct tm *min, struct tm *max,
int haveMin, struct tm *baseMin, struct Buffer *err)
{
int flag = MUTT_PDR_NONE;
while (*pc && ((flag & MUTT_PDR_DONE) == 0))
{
const char *pt = NULL;
char ch = *pc++;
SKIPWS(pc);
switch (ch)
{
case '-':
{
/* try a range of absolute date minus offset of Ndwmy */
pt = get_offset(min, pc, -1);
if (pc == pt)
{
if (flag == MUTT_PDR_NONE)
{ /* nothing yet and no offset parsed => absolute date? */
if (!get_date(pc, max, err))
flag |= (MUTT_PDR_ABSOLUTE | MUTT_PDR_ERRORDONE); /* done bad */
else
{
/* reestablish initial base minimum if not specified */
if (!haveMin)
memcpy(min, baseMin, sizeof(struct tm));
flag |= (MUTT_PDR_ABSOLUTE | MUTT_PDR_DONE); /* done good */
}
}
else
flag |= MUTT_PDR_ERRORDONE;
}
else
{
pc = pt;
if (flag == MUTT_PDR_NONE && !haveMin)
{ /* the very first "-3d" without a previous absolute date */
max->tm_year = min->tm_year;
max->tm_mon = min->tm_mon;
max->tm_mday = min->tm_mday;
}
flag |= MUTT_PDR_MINUS;
}
}
break;
case '+':
{ /* enlarge plusRange */
pt = get_offset(max, pc, 1);
if (pc == pt)
flag |= MUTT_PDR_ERRORDONE;
else
{
pc = pt;
flag |= MUTT_PDR_PLUS;
}
}
break;
case '*':
{ /* enlarge window in both directions */
pt = get_offset(min, pc, -1);
if (pc == pt)
flag |= MUTT_PDR_ERRORDONE;
else
{
pc = get_offset(max, pc, 1);
flag |= MUTT_PDR_WINDOW;
}
}
break;
default:
flag |= MUTT_PDR_ERRORDONE;
}
SKIPWS(pc);
}
if ((flag & MUTT_PDR_ERROR) && !(flag & MUTT_PDR_ABSOLUTE))
{ /* get_date has its own error message, don't overwrite it here */
snprintf(err->data, err->dsize, _("Invalid relative date: %s"), pc - 1);
}
return ((flag & MUTT_PDR_ERROR) ? NULL : pc);
}
static void adjust_date_range(struct tm *min, struct tm *max)
{
if (min->tm_year > max->tm_year ||
(min->tm_year == max->tm_year && min->tm_mon > max->tm_mon) ||
(min->tm_year == max->tm_year && min->tm_mon == max->tm_mon && min->tm_mday > max->tm_mday))
{
int tmp;
tmp = min->tm_year;
min->tm_year = max->tm_year;
max->tm_year = tmp;
tmp = min->tm_mon;
min->tm_mon = max->tm_mon;
max->tm_mon = tmp;
tmp = min->tm_mday;
min->tm_mday = max->tm_mday;
max->tm_mday = tmp;
min->tm_hour = min->tm_min = min->tm_sec = 0;
max->tm_hour = 23;
max->tm_min = max->tm_sec = 59;
}
}
static bool eat_date(struct Pattern *pat, struct Buffer *s, struct Buffer *err)
{
struct Buffer buffer;
struct tm min, max;
char *pexpr = NULL;
mutt_buffer_init(&buffer);
pexpr = s->dptr;
if (mutt_extract_token(&buffer, s, MUTT_TOKEN_COMMENT | MUTT_TOKEN_PATTERN) != 0 ||
!buffer.data)
{
snprintf(err->data, err->dsize, _("Error in expression: %s"), pexpr);
return false;
}
if (!*buffer.data)
{
snprintf(err->data, err->dsize, "%s", _("Empty expression"));
return false;
}
memset(&min, 0, sizeof(min));
/* the `0' time is Jan 1, 1970 UTC, so in order to prevent a negative time
when doing timezone conversion, we use Jan 2, 1970 UTC as the base
here */
min.tm_mday = 2;
min.tm_year = 70;
memset(&max, 0, sizeof(max));
/* Arbitrary year in the future. Don't set this too high
or mutt_mktime() returns something larger than will
fit in a time_t on some systems */
max.tm_year = 130;
max.tm_mon = 11;
max.tm_mday = 31;
max.tm_hour = 23;
max.tm_min = 59;
max.tm_sec = 59;
if (strchr("<>=", buffer.data[0]))
{
/* offset from current time
<3d less than three days ago
>3d more than three days ago
=3d exactly three days ago */
time_t now = time(NULL);
struct tm *tm = localtime(&now);
int exact = 0;
if (buffer.data[0] == '<')
{
memcpy(&min, tm, sizeof(min));
tm = &min;
}
else
{
memcpy(&max, tm, sizeof(max));
tm = &max;
if (buffer.data[0] == '=')
exact++;
}
tm->tm_hour = 23;
tm->tm_min = tm->tm_sec = 59;
/* force negative offset */
get_offset(tm, buffer.data + 1, -1);
if (exact)
{
/* start at the beginning of the day in question */
memcpy(&min, &max, sizeof(max));
min.tm_hour = min.tm_sec = min.tm_min = 0;
}
}
else
{
const char *pc = buffer.data;
int haveMin = false;
int untilNow = false;
if (isdigit((unsigned char) *pc))
{
/* minimum date specified */
if ((pc = get_date(pc, &min, err)) == NULL)
{
FREE(&buffer.data);
return false;
}
haveMin = true;
SKIPWS(pc);
if (*pc == '-')
{
const char *pt = pc + 1;
SKIPWS(pt);
untilNow = (*pt == '\0');
}
}
if (!untilNow)
{ /* max date or relative range/window */
struct tm baseMin;
if (!haveMin)
{ /* save base minimum and set current date, e.g. for "-3d+1d" */
time_t now = time(NULL);
struct tm *tm = localtime(&now);
memcpy(&baseMin, &min, sizeof(baseMin));
memcpy(&min, tm, sizeof(min));
min.tm_hour = min.tm_sec = min.tm_min = 0;
}
/* preset max date for relative offsets,
if nothing follows we search for messages on a specific day */
max.tm_year = min.tm_year;
max.tm_mon = min.tm_mon;
max.tm_mday = min.tm_mday;
if (!parse_date_range(pc, &min, &max, haveMin, &baseMin, err))
{ /* bail out on any parsing error */
FREE(&buffer.data);
return false;
}
}
}
/* Since we allow two dates to be specified we'll have to adjust that. */
adjust_date_range(&min, &max);
pat->min = mutt_mktime(&min, 1);
pat->max = mutt_mktime(&max, 1);
FREE(&buffer.data);
return true;
}
static bool eat_range(struct Pattern *pat, struct Buffer *s, struct Buffer *err)
{
char *tmp = NULL;
bool do_exclusive = false;
bool skip_quote = false;
/*
* If simple_search is set to "~m %s", the range will have double quotes
* around it...
*/
if (*s->dptr == '"')
{
s->dptr++;
skip_quote = true;
}
if (*s->dptr == '<')
do_exclusive = true;
if ((*s->dptr != '-') && (*s->dptr != '<'))
{
/* range minimum */
if (*s->dptr == '>')
{
pat->max = MUTT_MAXRANGE;
pat->min = strtol(s->dptr + 1, &tmp, 0) + 1; /* exclusive range */
}
else
pat->min = strtol(s->dptr, &tmp, 0);
if (toupper((unsigned char) *tmp) == 'K') /* is there a prefix? */
{
pat->min *= 1024;
tmp++;
}
else if (toupper((unsigned char) *tmp) == 'M')
{
pat->min *= 1048576;
tmp++;
}
if (*s->dptr == '>')
{
s->dptr = tmp;
return true;
}
if (*tmp != '-')
{
/* exact value */
pat->max = pat->min;
s->dptr = tmp;
return true;
}
tmp++;
}
else
{
s->dptr++;
tmp = s->dptr;
}
if (isdigit((unsigned char) *tmp))
{
/* range maximum */
pat->max = strtol(tmp, &tmp, 0);
if (toupper((unsigned char) *tmp) == 'K')
{
pat->max *= 1024;
tmp++;
}
else if (toupper((unsigned char) *tmp) == 'M')
{
pat->max *= 1048576;
tmp++;
}
if (do_exclusive)
(pat->max)--;
}
else
pat->max = MUTT_MAXRANGE;
if (skip_quote && *tmp == '"')
tmp++;
SKIPWS(tmp);
s->dptr = tmp;
return true;
}
static int report_regerror(int regerr, regex_t *preg, struct Buffer *err)
{
size_t ds = err->dsize;
if (regerror(regerr, preg, err->data, ds) > ds)
mutt_debug(2, "warning: buffer too small for regerror\n");
/* The return value is fixed, exists only to shorten code at callsite */
return RANGE_E_SYNTAX;
}
static bool is_context_available(struct Buffer *s, regmatch_t pmatch[],
int kind, struct Buffer *err)
{
char *context_loc = NULL;
const char *context_req_chars[] = {
[RANGE_K_REL] = ".0123456789",
[RANGE_K_ABS] = ".",
[RANGE_K_LT] = "",
[RANGE_K_GT] = "",
[RANGE_K_BARE] = ".",
};
/* First decide if we're going to need the context at all.
* Relative patterns need it iff they contain a dot or a number.
* Absolute patterns only need it if they contain a dot. */
context_loc = strpbrk(s->dptr + pmatch[0].rm_so, context_req_chars[kind]);
if (!context_loc || (context_loc >= &s->dptr[pmatch[0].rm_eo]))
return true;
/* We need a current message. Do we actually have one? */
if (Context && Context->menu)
return true;
/* Nope. */
strfcpy(err->data, _("No current message"), err->dsize);
return false;
}
static int scan_range_num(struct Buffer *s, regmatch_t pmatch[], int group, int kind)
{
int num;
unsigned char c;
/* this cast looks dangerous, but is already all over this code
* (explicit or not) */
num = (int) strtol(&s->dptr[pmatch[group].rm_so], NULL, 0);
c = (unsigned char) (s->dptr[pmatch[group].rm_eo - 1]);
if (toupper(c) == 'K')
num *= KILO;
else if (toupper(c) == 'M')
num *= MEGA;
switch (kind)
{
case RANGE_K_REL:
return num + CTX_MSGNO(Context);
case RANGE_K_LT:
return num - 1;
case RANGE_K_GT:
return num + 1;
default:
return num;
}
}
static int scan_range_slot(struct Buffer *s, regmatch_t pmatch[], int grp, int side, int kind)
{
unsigned char c;
/* This means the left or right subpattern was empty, e.g. ",." */
if ((pmatch[grp].rm_so == -1) || (pmatch[grp].rm_so == pmatch[grp].rm_eo))
{
if (side == RANGE_S_LEFT)
return 1;
else if (side == RANGE_S_RIGHT)
return Context->msgcount;
}
/* We have something, so determine what */
c = (unsigned char) (s->dptr[pmatch[grp].rm_so]);
switch (c)
{
case RANGE_CIRCUM:
return 1;
case RANGE_DOLLAR:
return Context->msgcount;
case RANGE_DOT:
return CTX_MSGNO(Context);
case RANGE_LT:
case RANGE_GT:
return scan_range_num(s, pmatch, grp + 1, kind);
default:
/* Only other possibility: a number */
return scan_range_num(s, pmatch, grp, kind);
}
}
static void order_range(struct Pattern *pat)
{
int num;
if (pat->min <= pat->max)
return;
num = pat->min;
pat->min = pat->max;
pat->max = num;
}
static int eat_range_by_regexp(struct Pattern *pat, struct Buffer *s, int kind,
struct Buffer *err)
{
int regerr;
regmatch_t pmatch[RANGE_RX_GROUPS];
struct RangeRegex *pspec = &range_regexps[kind];
/* First time through, compile the big regexp */
if (!pspec->ready)
{
regerr = regcomp(&pspec->cooked, pspec->raw, REG_EXTENDED);
if (regerr)
return report_regerror(regerr, &pspec->cooked, err);
pspec->ready = 1;
}
/* Match the pattern buffer against the compiled regexp.
* No match means syntax error. */
regerr = regexec(&pspec->cooked, s->dptr, RANGE_RX_GROUPS, pmatch, 0);
if (regerr)
return report_regerror(regerr, &pspec->cooked, err);
if (!is_context_available(s, pmatch, kind, err))
return RANGE_E_CTX;
/* Snarf the contents of the two sides of the range. */
pat->min = scan_range_slot(s, pmatch, pspec->lgrp, RANGE_S_LEFT, kind);
pat->max = scan_range_slot(s, pmatch, pspec->rgrp, RANGE_S_RIGHT, kind);
mutt_debug(1, "pat->min=%d pat->max=%d\n", pat->min, pat->max);
/* Special case for a bare 0. */
if ((kind == RANGE_K_BARE) && (pat->min == 0) && (pat->max == 0))
{
if (!Context->menu)
{
strfcpy(err->data, _("No current message"), err->dsize);
return RANGE_E_CTX;
}
pat->min = pat->max = CTX_MSGNO(Context);
}
/* Since we don't enforce order, we must swap bounds if they're backward */
order_range(pat);
/* Slide pointer past the entire match. */
s->dptr += pmatch[0].rm_eo;
return RANGE_E_OK;
}
static bool eat_message_range(struct Pattern *pat, struct Buffer *s, struct Buffer *err)
{
bool skip_quote = false;
/* We need a Context for pretty much anything. */
if (!Context)
{
strfcpy(err->data, _("No Context"), err->dsize);
return false;
}
/*
* If simple_search is set to "~m %s", the range will have double quotes
* around it...
*/
if (*s->dptr == '"')
{
s->dptr++;
skip_quote = true;
}
for (int i_kind = 0; i_kind != RANGE_K_INVALID; ++i_kind)
{
switch (eat_range_by_regexp(pat, s, i_kind, err))
{
case RANGE_E_CTX:
/* This means it matched syntactically but lacked context.
* No point in continuing. */
break;
case RANGE_E_SYNTAX:
/* Try another syntax, then */
continue;
case RANGE_E_OK:
if (skip_quote && (*s->dptr == '"'))
s->dptr++;
SKIPWS(s->dptr);
return true;
}
}
return false;
}
/**
* struct PatternFlags - Mapping between user character and internal constant
*/
static const struct PatternFlags
{
int tag; /**< character used to represent this op */
int op; /**< operation to perform */
int class;
bool (*eat_arg)(struct Pattern *, struct Buffer *, struct Buffer *);
} Flags[] = {
{ 'A', MUTT_ALL, 0, NULL },
{ 'b', MUTT_BODY, MUTT_FULL_MSG, eat_regexp },
{ 'B', MUTT_WHOLE_MSG, MUTT_FULL_MSG, eat_regexp },
{ 'c', MUTT_CC, 0, eat_regexp },
{ 'C', MUTT_RECIPIENT, 0, eat_regexp },
{ 'd', MUTT_DATE, 0, eat_date },
{ 'D', MUTT_DELETED, 0, NULL },
{ 'e', MUTT_SENDER, 0, eat_regexp },
{ 'E', MUTT_EXPIRED, 0, NULL },
{ 'f', MUTT_FROM, 0, eat_regexp },
{ 'F', MUTT_FLAG, 0, NULL },
{ 'g', MUTT_CRYPT_SIGN, 0, NULL },
{ 'G', MUTT_CRYPT_ENCRYPT, 0, NULL },
{ 'h', MUTT_HEADER, MUTT_FULL_MSG, eat_regexp },
{ 'H', MUTT_HORMEL, 0, eat_regexp },
{ 'i', MUTT_ID, 0, eat_regexp },
{ 'k', MUTT_PGP_KEY, 0, NULL },
{ 'l', MUTT_LIST, 0, NULL },
{ 'L', MUTT_ADDRESS, 0, eat_regexp },
{ 'm', MUTT_MESSAGE, 0, eat_message_range },
{ 'n', MUTT_SCORE, 0, eat_range },
{ 'N', MUTT_NEW, 0, NULL },
{ 'O', MUTT_OLD, 0, NULL },
{ 'p', MUTT_PERSONAL_RECIP, 0, NULL },
{ 'P', MUTT_PERSONAL_FROM, 0, NULL },
{ 'Q', MUTT_REPLIED, 0, NULL },
{ 'r', MUTT_DATE_RECEIVED, 0, eat_date },
{ 'R', MUTT_READ, 0, NULL },
{ 's', MUTT_SUBJECT, 0, eat_regexp },
{ 'S', MUTT_SUPERSEDED, 0, NULL },
{ 't', MUTT_TO, 0, eat_regexp },
{ 'T', MUTT_TAG, 0, NULL },
{ 'u', MUTT_SUBSCRIBED_LIST, 0, NULL },
{ 'U', MUTT_UNREAD, 0, NULL },
{ 'v', MUTT_COLLAPSED, 0, NULL },
{ 'V', MUTT_CRYPT_VERIFIED, 0, NULL },
#ifdef USE_NNTP
{ 'w', MUTT_NEWSGROUPS, 0, eat_regexp },
#endif
{ 'x', MUTT_REFERENCE, 0, eat_regexp },
{ 'X', MUTT_MIMEATTACH, 0, eat_range },
{ 'y', MUTT_XLABEL, 0, eat_regexp },
#ifdef USE_NOTMUCH
{ 'Y', MUTT_NOTMUCH_LABEL, 0, eat_regexp },
#endif
{ 'z', MUTT_SIZE, 0, eat_range },
{ '=', MUTT_DUPLICATED, 0, NULL },
{ '$', MUTT_UNREFERENCED, 0, NULL },
{ '#', MUTT_BROKEN, 0, NULL },
{ '/', MUTT_SERVERSEARCH, 0, eat_regexp },
{ 0, 0, 0, NULL },
};
static struct Pattern *SearchPattern = NULL; /* current search pattern */
static char LastSearch[STRING] = { 0 }; /* last pattern searched for */
static char LastSearchExpn[LONG_STRING] = { 0 }; /* expanded version of
LastSearch */
/**
* mutt_which_case - Smart-case searching
*
* if no uppercase letters are given, do a case-insensitive search
*/
int mutt_which_case(const char *s)
{
wchar_t w;
mbstate_t mb;
size_t l;
memset(&mb, 0, sizeof(mb));
for (; (l = mbrtowc(&w, s, MB_CUR_MAX, &mb)) != 0; s += l)
{
if (l == (size_t) -2)
continue; /* shift sequences */
if (l == (size_t) -1)
return 0; /* error; assume case-sensitive */
if (iswalpha((wint_t) w) && iswupper((wint_t) w))
return 0; /* case-sensitive */
}
return REG_ICASE; /* case-insensitive */
}
static int patmatch(const struct Pattern *pat, const char *buf)
{
if (pat->stringmatch)
return pat->ign_case ? !strcasestr(buf, pat->p.str) : !strstr(buf, pat->p.str);
else if (pat->groupmatch)
return !mutt_group_match(pat->p.g, buf);
else
return regexec(pat->p.rx, buf, 0, NULL, 0);
}
static int msg_search(struct Context *ctx, struct Pattern *pat, int msgno)
{
struct Message *msg = NULL;
struct State s;
FILE *fp = NULL;
long lng = 0;
int match = 0;
struct Header *h = ctx->hdrs[msgno];
char *buf = NULL;
size_t blen;
#ifdef USE_FMEMOPEN
char *temp = NULL;
size_t tempsize;
#else
char tempfile[_POSIX_PATH_MAX];
struct stat st;
#endif
if ((msg = mx_open_message(ctx, msgno)) != NULL)
{
if (option(OPT_THOROUGH_SRC))
{
/* decode the header / body */
memset(&s, 0, sizeof(s));
s.fpin = msg->fp;
s.flags = MUTT_CHARCONV;
#ifdef USE_FMEMOPEN
s.fpout = open_memstream(&temp, &tempsize);
if (!s.fpout)
{
mutt_perror(_("Error opening memstream"));
return 0;
}
#else
mutt_mktemp(tempfile, sizeof(tempfile));
if ((s.fpout = safe_fopen(tempfile, "w+")) == NULL)
{
mutt_perror(tempfile);
return 0;
}
#endif
if (pat->op != MUTT_BODY)
mutt_copy_header(msg->fp, h, s.fpout, CH_FROM | CH_DECODE, NULL);
if (pat->op != MUTT_HEADER)
{
mutt_parse_mime_message(ctx, h);
if (WithCrypto && (h->security & ENCRYPT) && !crypt_valid_passphrase(h->security))
{
mx_close_message(ctx, &msg);
if (s.fpout)
{
safe_fclose(&s.fpout);
#ifdef USE_FMEMOPEN
FREE(&temp);
#else
unlink(tempfile);
#endif
}
return 0;
}
fseeko(msg->fp, h->offset, SEEK_SET);
mutt_body_handler(h->content, &s);
}
#ifdef USE_FMEMOPEN
fclose(s.fpout);
lng = tempsize;
if (tempsize)
{
fp = fmemopen(temp, tempsize, "r");