Register Domain Name NZ

parse

parse

/*
* Copyright (C) 1996-2000 Michael R. Elkins
*
* 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 Place - Suite 330, Boston, MA 02111, USA.
*/

#include "mutt.h"
#include "mutt_regex.h"
#include "mailbox.h"
#include "mime.h"
#include "rfc2047.h"
#include "rfc2231.h"


#ifdef HAVE_PGP
#include "pgp.h"
#endif /* HAVE_PGP */



#include
#include
#include
#include

/* Reads an arbitrarily long header field, and looks ahead for continuation
* lines. ``line'' must point to a dynamically allocated string; it is
* increased if more space is required to fit the whole line.
*/
static char *read_rfc822_line (FILE *f, char *line, size_t *linelen)
{
char *buf = line;
char ch;
size_t offset = 0;

FOREVER
{
if (fgets (buf, *linelen - offset, f) == NULL || /* end of file or */
(ISSPACE (*line) && !offset)) /* end of headers */
{
*line = 0;
return (line);
}

buf += strlen (buf) - 1;
if (*buf == '\n')
{
/* we did get a full line. remove trailing space */
while (ISSPACE (*buf))
*buf-- = 0; /* we cannot come beyond line's beginning because
* it begins with a non-space */

/* check to see if the next line is a continuation line */
if ((ch = fgetc (f)) != ' ' && ch != '\t')
{
ungetc (ch, f);
return (line); /* next line is a separate header field or EOH */
}

/* eat tabs and spaces from the beginning of the continuation line */
while ((ch = fgetc (f)) == ' ' || ch == '\t')
;
ungetc (ch, f);
*++buf = ' '; /* string is still terminated because we removed
at least one whitespace char above */
}

buf++;
offset = buf - line;
if (*linelen < offset + STRING)
{
/* grow the buffer */
*linelen += STRING;
safe_realloc ((void **) &line, *linelen);
buf = line + offset;
}
}
/* not reached */
}

static LIST *mutt_parse_references (char *s, int in_reply_to)
{
LIST *t, *lst = NULL;
int m, n = 0;
char *o = NULL, *new, *at;

while ((s = strtok (s, " \t;")) != NULL)
{
/*
* some mail clients add other garbage besides message-ids, so do a quick
* check to make sure this looks like a valid message-id
* some idiotic clients also break their message-ids between lines, deal
* with that too (give up if it's more than two lines, though)
*/
t = NULL;
new = NULL;

if (*s == '<')
{
n = strlen (s);
if (s[n-1] != '>')
{
o = s;
s = NULL;
continue;
}

new = safe_strdup (s);
}
else if (o)
{
m = strlen (s);
if (s[m - 1] == '>')
{
new = safe_malloc (sizeof (char) * (n + m + 1));
strcpy (new, o); /* __STRCPY_CHECKED__ */
strcpy (new + n, s); /* __STRCPY_CHECKED__ */
}
}
if (new)
{
/* make sure that this really does look like a message-id.
* it should have exactly one @, and if we're looking at
* an in-reply-to header, make sure that the part before
* the @ has more than eight characters or it's probably
* an email address
*/
if (!(at = strchr (new, '@')) || strchr (at + 1, '@')
|| (in_reply_to && at - new <= 8))
safe_free ((void **) &new);
else
{
t = (LIST *) safe_malloc (sizeof (LIST));
t->data = new;
t->next = lst;
lst = t;
}
}
o = NULL;
s = NULL;
}

return (lst);
}

int mutt_check_encoding (const char *c)
{
if (ascii_strncasecmp ("7bit", c, sizeof ("7bit")-1) == 0)
return (ENC7BIT);
else if (ascii_strncasecmp ("8bit", c, sizeof ("8bit")-1) == 0)
return (ENC8BIT);
else if (ascii_strncasecmp ("binary", c, sizeof ("binary")-1) == 0)
return (ENCBINARY);
else if (ascii_strncasecmp ("quoted-printable", c, sizeof ("quoted-printable")-1) == 0)
return (ENCQUOTEDPRINTABLE);
else if (ascii_strncasecmp ("base64", c, sizeof("base64")-1) == 0)
return (ENCBASE64);
else if (ascii_strncasecmp ("x-uuencode", c, sizeof("x-uuencode")-1) == 0)
return (ENCUUENCODED);
#ifdef SUN_ATTACHMENT
else if (ascii_strncasecmp ("uuencode", c, sizeof("uuencode")-1) == 0)
return (ENCUUENCODED);
#endif
else
return (ENCOTHER);
}

static PARAMETER *parse_parameters (const char *s)
{
PARAMETER *head = 0, *cur = 0, *new;
char buffer[LONG_STRING];
const char *p;
size_t i;

dprint (2, (debugfile, "parse_parameters: `%s'\n", s));

while (*s)
{
if ((p = strpbrk (s, "=;")) == NULL)
{
dprint(1, (debugfile, "parse_parameters: malformed parameter: %s\n", s));
goto bail;
}

/* if we hit a ; now the parameter has no value, just skip it */
if (*p != ';')
{
i = p - s;

new = mutt_new_parameter ();

new->attribute = safe_malloc (i + 1);
memcpy (new->attribute, s, i);
new->attribute[i] = 0;

/* remove whitespace from the end of the attribute name */
while (ISSPACE (new->attribute[--i]))
new->attribute[i] = 0;

s = p + 1; /* skip over the = */
SKIPWS (s);

if (*s == '"')
{
s++;
for (i=0; *s && *s != '"' && i < sizeof (buffer) - 1; i++, s++)
{
if (*s == '\\')
{
/* Quote the next character */
buffer[i] = s[1];
if (!*++s)
break;
}
else
buffer[i] = *s;
}
buffer[i] = 0;
if (*s)
s++; /* skip over the " */
}
else
{
for (i=0; *s && *s != ' ' && *s != ';' && i < sizeof (buffer) - 1; i++, s++)
buffer[i] = *s;
buffer[i] = 0;
}

new->value = safe_strdup (buffer);

dprint (2, (debugfile, "parse_parameter: `%s' = `%s'\n",
new->attribute ? new->attribute : "",
new->value ? new->value : ""));

/* Add this parameter to the list */
if (head)
{
cur->next = new;
cur = cur->next;
}
else
head = cur = new;
}
else
{
dprint (1, (debugfile, "parse_parameters(): parameter with no value: %s\n", s));
s = p;
}

/* Find the next parameter */
if (*s != ';' && (s = strchr (s, ';')) == NULL)
break; /* no more parameters */

do
{
s++;

/* Move past any leading whitespace */
SKIPWS (s);
}
while (*s == ';'); /* skip empty parameters */
}

bail:

rfc2231_decode_parameters (&head);
return (head);
}

int mutt_check_mime_type (const char *s)
{
if (ascii_strcasecmp ("text", s) == 0)
return TYPETEXT;
else if (ascii_strcasecmp ("multipart", s) == 0)
return TYPEMULTIPART;
#ifdef SUN_ATTACHMENT
else if (ascii_strcasecmp ("x-sun-attachment", s) == 0)
return TYPEMULTIPART;
#endif
else if (ascii_strcasecmp ("application", s) == 0)
return TYPEAPPLICATION;
else if (ascii_strcasecmp ("message", s) == 0)
return TYPEMESSAGE;
else if (ascii_strcasecmp ("image", s) == 0)
return TYPEIMAGE;
else if (ascii_strcasecmp ("audio", s) == 0)
return TYPEAUDIO;
else if (ascii_strcasecmp ("video", s) == 0)
return TYPEVIDEO;
else if (ascii_strcasecmp ("model", s) == 0)
return TYPEMODEL;
else
return TYPEOTHER;
}

void mutt_parse_content_type (char *s, BODY *ct)
{
char *pc;
char *subtype;

safe_free((void **)&ct->subtype);
mutt_free_parameter(&ct->parameter);

/* First extract any existing parameters */
if ((pc = strchr(s, ';')) != NULL)
{
*pc++ = 0;
while (*pc && ISSPACE (*pc))
pc++;
ct->parameter = parse_parameters(pc);

/* Some pre-RFC1521 gateways still use the "name=filename" convention,
* but if a filename has already been set in the content-disposition,
* let that take precedence, and don't set it here */
if ((pc = mutt_get_parameter( "name", ct->parameter)) != 0 && !ct->filename)
ct->filename = safe_strdup(pc);

#ifdef SUN_ATTACHMENT
/* this is deep and utter perversion */
if ((pc = mutt_get_parameter ("conversions", ct->parameter)) != 0)
ct->encoding = mutt_check_encoding (pc);
#endif

}

/* Now get the subtype */
if ((subtype = strchr(s, '/')))
{
*subtype++ = '\0';
for(pc = subtype; *pc && !ISSPACE(*pc) && *pc != ';'; pc++)
;
*pc = '\0';
ct->subtype = safe_strdup (subtype);
}

/* Finally, get the major type */
ct->type = mutt_check_mime_type (s);

#ifdef SUN_ATTACHMENT
if (ascii_strcasecmp ("x-sun-attachment", s) == 0)
ct->subtype = safe_strdup ("x-sun-attachment");
#endif

if (ct->type == TYPEOTHER)
{
ct->xtype = safe_strdup (s);
}

if (ct->subtype == NULL)
{
/* Some older non-MIME mailers (i.e., mailtool, elm) have a content-type
* field, so we can attempt to convert the type to BODY here.
*/
if (ct->type == TYPETEXT)
ct->subtype = safe_strdup ("plain");
else if (ct->type == TYPEAUDIO)
ct->subtype = safe_strdup ("basic");
else if (ct->type == TYPEMESSAGE)
ct->subtype = safe_strdup ("rfc822");
else if (ct->type == TYPEOTHER)
{
char buffer[SHORT_STRING];

ct->type = TYPEAPPLICATION;
snprintf (buffer, sizeof (buffer), "x-%s", s);
ct->subtype = safe_strdup (buffer);
}
else
ct->subtype = safe_strdup ("x-unknown");
}

/* Default character set for text types. */
if (ct->type == TYPETEXT)
{
if (!(pc = mutt_get_parameter ("charset", ct->parameter)))
mutt_set_parameter ("charset", "us-ascii", &ct->parameter);
}

}

static void parse_content_disposition (char *s, BODY *ct)
{
PARAMETER *parms;

if (!ascii_strncasecmp ("inline", s, 6))
ct->disposition = DISPINLINE;
else if (!ascii_strncasecmp ("form-data", s, 9))
ct->disposition = DISPFORMDATA;
else
ct->disposition = DISPATTACH;

/* Check to see if a default filename was given */
if ((s = strchr (s, ';')) != NULL)
{
s++;
SKIPWS (s);
if ((s = mutt_get_parameter ("filename", (parms = parse_parameters (s)))) != 0)
mutt_str_replace (&ct->filename, s);
if ((s = mutt_get_parameter ("name", parms)) != 0)
ct->form_name = safe_strdup (s);
mutt_free_parameter (&parms);
}
}

/* args:
* fp stream to read from
*
* digest 1 if reading subparts of a multipart/digest, 0
* otherwise
*/

BODY *mutt_read_mime_header (FILE *fp, int digest)
{
BODY *p = mutt_new_body();
char *c;
char *line = safe_malloc (LONG_STRING);
size_t linelen = LONG_STRING;

p->hdr_offset = ftell(fp);

p->encoding = ENC7BIT; /* default from RFC1521 */
p->type = digest ? TYPEMESSAGE : TYPETEXT;
p->disposition = DISPINLINE;

while (*(line = read_rfc822_line (fp, line, &linelen)) != 0)
{
/* Find the value of the current header */
if ((c = strchr (line, ':')))
{
*c = 0;
c++;
SKIPWS (c);
if (!*c)
{
dprint (1, (debugfile, "mutt_read_mime_header(): skipping empty header field: %s\n", line));
continue;
}
}
else
{
dprint (1, (debugfile, "read_mime_header: bogus MIME header: %s\n", line));
break;
}

if (!ascii_strncasecmp ("content-", line, 8))
{
if (!ascii_strcasecmp ("type", line + 8))
mutt_parse_content_type (c, p);
else if (!ascii_strcasecmp ("transfer-encoding", line + 8))
p->encoding = mutt_check_encoding (c);
else if (!ascii_strcasecmp ("disposition", line + 8))
parse_content_disposition (c, p);
else if (!ascii_strcasecmp ("description", line + 8))
{
mutt_str_replace (&p->description, c);
rfc2047_decode (&p->description);
}
}
#ifdef SUN_ATTACHMENT
else if (!ascii_strncasecmp ("x-sun-", line, 6))
{
if (!ascii_strcasecmp ("data-type", line + 6))
mutt_parse_content_type (c, p);
else if (!ascii_strcasecmp ("encoding-info", line + 6))
p->encoding = mutt_check_encoding (c);
else if (!ascii_strcasecmp ("content-lines", line + 6))
mutt_set_parameter ("content-lines", safe_strdup (c), &(p->parameter));
else if (!ascii_strcasecmp ("data-description", line + 6))
{
mutt_str_replace (&p->description, c);
rfc2047_decode (&p->description);
}
}
#endif
}
p->offset = ftell (fp); /* Mark the start of the real data */
if (p->type == TYPETEXT && !p->subtype)
p->subtype = safe_strdup ("plain");
else if (p->type == TYPEMESSAGE && !p->subtype)
p->subtype = safe_strdup ("rfc822");

FREE (&line);

return (p);
}

void mutt_parse_part (FILE *fp, BODY *b)
{
char *bound = 0;

switch (b->type)
{
case TYPEMULTIPART:
#ifdef SUN_ATTACHMENT
if ( !ascii_strcasecmp (b->subtype, "x-sun-attachment") )
bound = "--------";
else
#endif
bound = mutt_get_parameter ("boundary", b->parameter);

fseek (fp, b->offset, SEEK_SET);
b->parts = mutt_parse_multipart (fp, bound,
b->offset + b->length,
ascii_strcasecmp ("digest", b->subtype) == 0);
break;

case TYPEMESSAGE:
if (b->subtype)
{
fseek (fp, b->offset, SEEK_SET);
if (mutt_is_message_type(b->type, b->subtype))
b->parts = mutt_parse_messageRFC822 (fp, b);
else if (ascii_strcasecmp (b->subtype, "external-body") == 0)
b->parts = mutt_read_mime_header (fp, 0);
else
return;
}
break;

default:
return;
}

/* try to recover from parsing error */
if (!b->parts)
{
b->type = TYPETEXT;
mutt_str_replace (&b->subtype, "plain");
}
}

/* parse a MESSAGE/RFC822 body
*
* args:
* fp stream to read from
*
* parent structure which contains info about the message/rfc822
* body part
*
* NOTE: this assumes that `parent->length' has been set!
*/

BODY *mutt_parse_messageRFC822 (FILE *fp, BODY *parent)
{
BODY *msg;

parent->hdr = mutt_new_header ();
parent->hdr->offset = ftell (fp);
parent->hdr->env = mutt_read_rfc822_header (fp, parent->hdr, 0, 0);
msg = parent->hdr->content;

/* ignore the length given in the content-length since it could be wrong
and we already have the info to calculate the correct length */
/* if (msg->length == -1) */
msg->length = parent->length - (msg->offset - parent->offset);

/* if body of this message is empty, we can end up with a negative length */
if (msg->length < 0)
msg->length = 0;

mutt_parse_part(fp, msg);
return (msg);
}

/* parse a multipart structure
*
* args:
* fp stream to read from
*
* boundary body separator
*
* end_off length of the multipart body (used when the final
* boundary is missing to avoid reading too far)
*
* digest 1 if reading a multipart/digest, 0 otherwise
*/

BODY *mutt_parse_multipart (FILE *fp, const char *boundary, long end_off, int digest)
{
#ifdef SUN_ATTACHMENT
int lines;
#endif
int blen, len, crlf = 0;
char buffer[LONG_STRING];
BODY *head = 0, *last = 0, *new = 0;
int i;
int final = 0; /* did we see the ending boundary? */

if (!boundary)
{
mutt_error _("multipart message has no boundary parameter!");
return (NULL);
}

blen = mutt_strlen (boundary);
while (ftell (fp) < end_off && fgets (buffer, LONG_STRING, fp) != NULL)
{
len = mutt_strlen (buffer);

crlf = (len > 1 && buffer[len - 2] == '\r') ? 1 : 0;

if (buffer[0] == '-' && buffer[1] == '-' &&
mutt_strncmp (buffer + 2, boundary, blen) == 0)
{
if (last)
{
last->length = ftell (fp) - last->offset - len - 1 - crlf;
if (last->parts && last->parts->length == 0)
last->parts->length = ftell (fp) - last->parts->offset - len - 1 - crlf;
/* if the body is empty, we can end up with a -1 length */
if (last->length < 0)
last->length = 0;
}

/* Remove any trailing whitespace, up to the length of the boundary */
for (i = len - 1; ISSPACE (buffer[i]) && i >= blen + 2; i--)
buffer[i] = 0;

/* Check for the end boundary */
if (mutt_strcmp (buffer + blen + 2, "--") == 0)
{
final = 1;
break; /* done parsing */
}
else if (buffer[2 + blen] == 0)
{
new = mutt_read_mime_header (fp, digest);

#ifdef SUN_ATTACHMENT
if (mutt_get_parameter ("content-lines", new->parameter)) {
for (lines = atoi(mutt_get_parameter ("content-lines", new->parameter));
lines; lines-- )
if (ftell (fp) >= end_off || fgets (buffer, LONG_STRING, fp) == NULL)
break;
}
#endif

/*
* Consistency checking - catch
* bad attachment end boundaries
*/

if(new->offset > end_off)
{
mutt_free_body(&new);
break;
}
if (head)
{
last->next = new;
last = new;
}
else
last = head = new;
}
}
}

/* in case of missing end boundary, set the length to something reasonable */
if (last && last->length == 0 && !final)
last->length = end_off - last->offset;

/* parse recursive MIME parts */
for(last = head; last; last = last->next)
mutt_parse_part(fp, last);

return (head);
}

static const char *uncomment_timezone (char *buf, size_t buflen, const char *tz)
{
char *p;
size_t len;

if (*tz != '(')
return tz; /* no need to do anything */
tz++;
SKIPWS (tz);
if ((p = strpbrk (tz, " )")) == NULL)
return tz;
len = p - tz;
if (len > buflen - 1)
len = buflen - 1;
memcpy (buf, tz, len);
buf[len] = 0;
return buf;
}

static struct tz_t
{
char tzname[5];
unsigned char zhours;
unsigned char zminutes;
unsigned char zoccident; /* west of UTC? */
}
TimeZones[] =
{
{ "aat", 1, 0, 1 }, /* Atlantic Africa Time */
{ "adt", 4, 0, 0 }, /* Arabia DST */
{ "ast", 3, 0, 0 }, /* Arabia */
/*{ "ast", 4, 0, 1 },*/ /* Atlantic */
{ "bst", 1, 0, 0 }, /* British DST */
{ "cat", 1, 0, 0 }, /* Central Africa */
{ "cdt", 5, 0, 1 },
{ "cest", 2, 0, 0 }, /* Central Europe DST */
{ "cet", 1, 0, 0 }, /* Central Europe */
{ "cst", 6, 0, 1 },
/*{ "cst", 8, 0, 0 },*/ /* China */
/*{ "cst", 9, 30, 0 },*/ /* Australian Central Standard Time */
{ "eat", 3, 0, 0 }, /* East Africa */
{ "edt", 4, 0, 1 },
{ "eest", 3, 0, 0 }, /* Eastern Europe DST */
{ "eet", 2, 0, 0 }, /* Eastern Europe */
{ "egst", 0, 0, 0 }, /* Eastern Greenland DST */
{ "egt", 1, 0, 1 }, /* Eastern Greenland */
{ "est", 5, 0, 1 },
{ "gmt", 0, 0, 0 },
{ "gst", 4, 0, 0 }, /* Presian Gulf */
{ "hkt", 8, 0, 0 }, /* Hong Kong */
{ "ict", 7, 0, 0 }, /* Indochina */
{ "idt", 3, 0, 0 }, /* Israel DST */
{ "ist", 2, 0, 0 }, /* Israel */
/*{ "ist", 5, 30, 0 },*/ /* India */
{ "jst", 9, 0, 0 }, /* Japan */
{ "kst", 9, 0, 0 }, /* Korea */
{ "mdt", 6, 0, 1 },
{ "met", 1, 0, 0 }, /* this is now officially CET */
{ "msd", 4, 0, 0 }, /* Moscow DST */
{ "msk", 3, 0, 0 }, /* Moscow */
{ "mst", 7, 0, 1 },
{ "nzdt", 13, 0, 0 }, /* New Zealand DST */
{ "nzst", 12, 0, 0 }, /* New Zealand */
{ "pdt", 7, 0, 1 },
{ "pst", 8, 0, 1 },
{ "sat", 2, 0, 0 }, /* South Africa */
{ "smt", 4, 0, 0 }, /* Seychelles */
{ "sst", 11, 0, 1 }, /* Samoa */
/*{ "sst", 8, 0, 0 },*/ /* Singapore */
{ "utc", 0, 0, 0 },
{ "wat", 0, 0, 0 }, /* West Africa */
{ "west", 1, 0, 0 }, /* Western Europe DST */
{ "wet", 0, 0, 0 }, /* Western Europe */
{ "wgst", 2, 0, 1 }, /* Western Greenland DST */
{ "wgt", 3, 0, 1 }, /* Western Greenland */
{ "wst", 8, 0, 0 }, /* Western Australia */
};

/* parses a date string in RFC822 format:
*
* Date: [ weekday , ] day-of-month month year hour:minute:second timezone
*
* This routine assumes that `h' has been initialized to 0. the `timezone'
* field is optional, defaulting to +0000 if missing.
*/
time_t mutt_parse_date (const char *s, HEADER *h)
{
int count = 0;
char *t;
int hour, min, sec;
struct tm tm;
int i;
int tz_offset = 0;
int zhours = 0;
int zminutes = 0;
int zoccident = 0;
const char *ptz;
char tzstr[SHORT_STRING];
char scratch[SHORT_STRING];

/* Don't modify our argument. Fixed-size buffer is ok here since
* the date format imposes a natural limit.
*/

strfcpy (scratch, s, sizeof (scratch));

/* kill the day of the week, if it exists. */
if ((t = strchr (scratch, ',')))
t++;
else
t = scratch;
SKIPWS (t);

memset (&tm, 0, sizeof (tm));

while ((t = strtok (t, " \t")) != NULL)
{
switch (count)
{
case 0: /* day of the month */
if (!isdigit ((unsigned char) *t))
return (-1);
tm.tm_mday = atoi (t);
if (tm.tm_mday > 31)
return (-1);
break;

case 1: /* month of the year */
if ((i = mutt_check_month (t)) < 0)
return (-1);
tm.tm_mon = i;
break;

case 2: /* year */
tm.tm_year = atoi (t);
if (tm.tm_year < 50)
tm.tm_year += 100;
else if (tm.tm_year >= 1900)
tm.tm_year -= 1900;
break;

case 3: /* time of day */
if (sscanf (t, "%d:%d:%d", &hour, &min, &sec) == 3)
;
else if (sscanf (t, "%d:%d", &hour, &min) == 2)
sec = 0;
else
{
dprint(1, (debugfile, "parse_date: could not process time format: %s\n", t));
return(-1);
}
tm.tm_hour = hour;
tm.tm_min = min;
tm.tm_sec = sec;
break;

case 4: /* timezone */
/* sometimes we see things like (MST) or (-0700) so attempt to
* compensate by uncommenting the string if non-RFC822 compliant
*/
ptz = uncomment_timezone (tzstr, sizeof (tzstr), t);

if (*ptz == '+' || *ptz == '-')
{
if (ptz[1] && ptz[2] && ptz[3] && ptz[4]
&& isdigit ((unsigned char) ptz[1]) && isdigit ((unsigned char) ptz[2])
&& isdigit ((unsigned char) ptz[3]) && isdigit ((unsigned char) ptz[4]))
{
zhours = (ptz[1] - '0') * 10 + (ptz[2] - '0');
zminutes = (ptz[3] - '0') * 10 + (ptz[4] - '0');

if (ptz[0] == '-')
zoccident = 1;
}
}
else
{
struct tz_t *tz;

tz = bsearch (ptz, TimeZones, sizeof TimeZones/sizeof (struct tz_t),
sizeof (struct tz_t),
(int (*)(const void *, const void *)) ascii_strcasecmp
/* This is safe to do: A pointer to a struct equals
* a pointer to its first element*/);

if (tz)
{
zhours = tz->zhours;
zminutes = tz->zminutes;
zoccident = tz->zoccident;
}

/* ad hoc support for the European MET (now officially CET) TZ */
if (ascii_strcasecmp (t, "MET") == 0)
{
if ((t = strtok (NULL, " \t")) != NULL)
{
if (!ascii_strcasecmp (t, "DST"))
zhours++;
}
}
}
tz_offset = zhours * 3600 + zminutes * 60;
if (!zoccident)
tz_offset = -tz_offset;
break;
}
count++;
t = 0;
}

if (count < 4) /* don't check for missing timezone */
{
dprint(1,(debugfile, "parse_date(): error parsing date format, using received time\n"));
return (-1);
}

if (h)
{
h->zhours = zhours;
h->zminutes = zminutes;
h->zoccident = zoccident;
}

return (mutt_mktime (&tm, 0) + tz_offset);
}

/* extract the first substring that looks like a message-id */
static char *extract_message_id (const char *s)
{
const char *p;
char *r;
size_t l;

if ((s = strchr (s, '<')) == NULL || (p = strchr (s, '>')) == NULL)
return (NULL);
l = (size_t)(p - s) + 1;
r = safe_malloc (l + 1);
memcpy (r, s, l);
r[l] = 0;
return (r);
}

void mutt_parse_mime_message (CONTEXT *ctx, HEADER *cur)
{
MESSAGE *msg;

if (cur->content->type != TYPEMESSAGE && cur->content->type != TYPEMULTIPART)
return; /* nothing to do */

if (cur->content->parts)
return; /* The message was parsed earlier. */

if ((msg = mx_open_message (ctx, cur->msgno)))
{
mutt_parse_part (msg->fp, cur->content);


#ifdef HAVE_PGP
cur->pgp = pgp_query (cur->content);
#endif /* HAVE_PGP */


mx_close_message (&msg);
}
}

int mutt_parse_rfc822_line (ENVELOPE *e, HEADER *hdr, char *line, char *p, short user_hdrs, short weed,
short do_2047, LIST **lastp)
{
int matched = 0;
LIST *last = NULL;

if (lastp)
last = *lastp;

switch (ascii_tolower (line[0]))
{
case 'a':
if (ascii_strcasecmp (line+1, "pparently-to") == 0)
{
e->to = rfc822_parse_adrlist (e->to, p);
matched = 1;
}
else if (ascii_strcasecmp (line+1, "pparently-from") == 0)
{
e->from = rfc822_parse_adrlist (e->from, p);
matched = 1;
}
break;

case 'b':
if (ascii_strcasecmp (line+1, "cc") == 0)
{
e->bcc = rfc822_parse_adrlist (e->bcc, p);
matched = 1;
}
break;

case 'c':
if (ascii_strcasecmp (line+1, "c") == 0)
{
e->cc = rfc822_parse_adrlist (e->cc, p);
matched = 1;
}
else if (ascii_strncasecmp (line + 1, "ontent-", 7) == 0)
{
if (ascii_strcasecmp (line+8, "type") == 0)
{
if (hdr)
mutt_parse_content_type (p, hdr->content);
matched = 1;
}
else if (ascii_strcasecmp (line+8, "transfer-encoding") == 0)
{
if (hdr)
hdr->content->encoding = mutt_check_encoding (p);
matched = 1;
}
else if (ascii_strcasecmp (line+8, "length") == 0)
{
if (hdr)
{
if ((hdr->content->length = atoi (p)) < 0)
hdr->content->length = -1;
}
matched = 1;
}
else if (ascii_strcasecmp (line+8, "description") == 0)
{
if (hdr)
{
mutt_str_replace (&hdr->content->description, p);
rfc2047_decode (&hdr->content->description);
}
matched = 1;
}
else if (ascii_strcasecmp (line+8, "disposition") == 0)
{
if (hdr)
parse_content_disposition (p, hdr->content);
matched = 1;
}
}
break;

case 'd':
if (!ascii_strcasecmp ("ate", line + 1))
{
mutt_str_replace (&e->date, p);
if (hdr)
hdr->date_sent = mutt_parse_date (p, hdr);
matched = 1;
}
break;

case 'e':
if (!ascii_strcasecmp ("xpires", line + 1) &&
hdr && mutt_parse_date (p, NULL) < time (NULL))
hdr->expired = 1;
break;

case 'f':
if (!ascii_strcasecmp ("rom", line + 1))
{
e->from = rfc822_parse_adrlist (e->from, p);
matched = 1;
}
break;

case 'i':
if (!ascii_strcasecmp (line+1, "n-reply-to"))
{
mutt_free_list (&e->in_reply_to);
e->in_reply_to = mutt_parse_references (p, 1);
matched = 1;
}
break;

case 'l':
if (!ascii_strcasecmp (line + 1, "ines"))
{
if (hdr)
hdr->lines = atoi (p);
matched = 1;
}
break;

case 'm':
if (!ascii_strcasecmp (line + 1, "ime-version"))
{
if (hdr)
hdr->mime = 1;
matched = 1;
}
else if (!ascii_strcasecmp (line + 1, "essage-id"))
{
/* We add a new "Message-Id:" when building a message */
safe_free ((void **) &e->message_id);
e->message_id = extract_message_id (p);
matched = 1;
}
else if (!ascii_strncasecmp (line + 1, "ail-", 4))
{
if (!ascii_strcasecmp (line + 5, "reply-to"))
{
/* override the Reply-To: field */
rfc822_free_address (&e->reply_to);
e->reply_to = rfc822_parse_adrlist (e->reply_to, p);
matched = 1;
}
else if (!ascii_strcasecmp (line + 5, "followup-to"))
{
e->mail_followup_to = rfc822_parse_adrlist (e->mail_followup_to, p);
matched = 1;
}
}
break;

case 'r':
if (!ascii_strcasecmp (line + 1, "eferences"))
{
mutt_free_list (&e->references);
e->references = mutt_parse_references (p, 0);
matched = 1;
}
else if (!ascii_strcasecmp (line + 1, "eply-to"))
{
e->reply_to = rfc822_parse_adrlist (e->reply_to, p);
matched = 1;
}
else if (!ascii_strcasecmp (line + 1, "eturn-path"))
{
e->return_path = rfc822_parse_adrlist (e->return_path, p);
matched = 1;
}
else if (!ascii_strcasecmp (line + 1, "eceived"))
{
if (hdr && !hdr->received)
{
char *d = strchr (p, ';');

if (d)
hdr->received = mutt_parse_date (d + 1, NULL);
}
}
break;

case 's':
if (!ascii_strcasecmp (line + 1, "ubject"))
{
if (!e->subject)
e->subject = safe_strdup (p);
matched = 1;
}
else if (!ascii_strcasecmp (line + 1, "ender"))
{
e->sender = rfc822_parse_adrlist (e->sender, p);
matched = 1;
}
else if (!ascii_strcasecmp (line + 1, "tatus"))
{
if (hdr)
{
while (*p)
{
switch(*p)
{
case 'r':
hdr->replied = 1;
break;
case 'O':
if (option (OPTMARKOLD))
hdr->old = 1;
break;
case 'R':
hdr->read = 1;
break;
}
p++;
}
}
matched = 1;
}
else if ((!ascii_strcasecmp ("upersedes", line + 1) ||
!ascii_strcasecmp ("upercedes", line + 1)) && hdr)
e->supersedes = safe_strdup (p);
break;

case 't':
if (ascii_strcasecmp (line+1, "o") == 0)
{
e->to = rfc822_parse_adrlist (e->to, p);
matched = 1;
}
break;

case 'x':
if (ascii_strcasecmp (line+1, "-status") == 0)
{
if (hdr)
{
while (*p)
{
switch (*p)
{
case 'A':
hdr->replied = 1;
break;
case 'D':
hdr->deleted = 1;
break;
case 'F':
hdr->flagged = 1;
break;
default:
break;
}
p++;
}
}
matched = 1;
}
else if (ascii_strcasecmp (line+1, "-label") == 0)
{
e->x_label = safe_strdup(p);
matched = 1;
}

default:
break;
}

/* Keep track of the user-defined headers */
if (!matched && user_hdrs)
{
/* restore the original line */
line[strlen (line)] = ':';

if (weed && option (OPTWEED) && mutt_matches_ignore (line, Ignore)
&& !mutt_matches_ignore (line, UnIgnore))
goto done;

if (last)
{
last->next = mutt_new_list ();
last = last->next;
}
else
last = e->userhdrs = mutt_new_list ();
last->data = safe_strdup (line);
if (do_2047)
rfc2047_decode (&last->data);
}

done:

*lastp = last;
return matched;
}


/* mutt_read_rfc822_header() -- parses a RFC822 header
*
* Args:
*
* f stream to read from
*
* hdr header structure of current message (optional).
*
* user_hdrs If set, store user headers. Used for recall-message and
* postpone modes.
*
* weed If this parameter is set and the user has activated the
* $weed option, honor the header weed list for user headers.
* Used for recall-message.
*
*/
ENVELOPE *mutt_read_rfc822_header (FILE *f, HEADER *hdr, short user_hdrs,
short weed)
{
ENVELOPE *e = mutt_new_envelope();
LIST *last = NULL;
char *line = safe_malloc (LONG_STRING);
char *p;
long loc;
int matched;
size_t linelen = LONG_STRING;

if (hdr)
{
if (hdr->content == NULL)
{
hdr->content = mutt_new_body ();

/* set the defaults from RFC1521 */
hdr->content->type = TYPETEXT;
hdr->content->subtype = safe_strdup ("plain");
hdr->content->encoding = ENC7BIT;
hdr->content->length = -1;

/* RFC 2183 says this is arbitrary */
hdr->content->disposition = DISPINLINE;
}
}

while ((loc = ftell (f)),
*(line = read_rfc822_line (f, line, &linelen)) != 0)
{
matched = 0;

if ((p = strpbrk (line, ": \t")) == NULL || *p != ':')
{
char return_path[LONG_STRING];
time_t t;

/* some bogus MTAs will quote the original "From " line */
if (mutt_strncmp (">From ", line, 6) == 0)
continue; /* just ignore */
else if (is_from (line, return_path, sizeof (return_path), &t))
{
/* MH somtimes has the From_ line in the middle of the header! */
if (hdr && !hdr->received)
hdr->received = t - mutt_local_tz (t);
continue;
}

fseek (f, loc, 0);
break; /* end of header */
}

*p = 0;
p++;
SKIPWS (p);
if (!*p)
continue; /* skip empty header fields */

matched = mutt_parse_rfc822_line (e, hdr, line, p, user_hdrs, weed, 1, &last);

}

FREE (&line);

if (hdr)
{
hdr->content->hdr_offset = hdr->offset;
hdr->content->offset = ftell (f);

/* do RFC2047 decoding */
rfc2047_decode_adrlist (e->from);
rfc2047_decode_adrlist (e->to);
rfc2047_decode_adrlist (e->cc);
rfc2047_decode_adrlist (e->reply_to);
rfc2047_decode_adrlist (e->mail_followup_to);
rfc2047_decode_adrlist (e->return_path);
rfc2047_decode_adrlist (e->sender);

if (e->subject)
{
regmatch_t pmatch[1];

rfc2047_decode (&e->subject);

if (regexec (ReplyRegexp.rx, e->subject, 1, pmatch, 0) == 0)
e->real_subj = e->subject + pmatch[0].rm_eo;
else
e->real_subj = e->subject;
}

/* check for missing or invalid date */
if (hdr->date_sent <= 0)
{
dprint(1,(debugfile,"read_rfc822_header(): no date found, using received time from msg separator\n"));
hdr->date_sent = hdr->received;
}
}

return (e);
}

ADDRESS *mutt_parse_adrlist (ADDRESS *p, const char *s)
{
const char *q;

/* check for a simple whitespace separated list of addresses */
if ((q = strpbrk (s, "\"<>():;,\\")) == NULL)
{
char tmp[HUGE_STRING];
char *r;

strfcpy (tmp, s, sizeof (tmp));
r = tmp;
while ((r = strtok (r, " \t")) != NULL)
{
p = rfc822_parse_adrlist (p, r);
r = NULL;
}
}
else
p = rfc822_parse_adrlist (p, s);

return p;
}

Register Domain Name NZ

Page: 1 2 3 4 5 6 7 8 9 10

Register Domain Name NZ Register Domain Name NZ Domain Hosting Cheap Domain Registration