const char *rfc2045_boundary(const struct rfc2045 *p)
{
const char *cb=rfc2045_getattr( p->content_type_attr, "boundary");
if (!cb) cb="";
return (cb);
}
static struct rfc2045 *append_part(struct rfc2045 *p, size_t startpos)
{
struct rfc2045 *newp=append_part_noinherit(p, startpos);
/* Substructures inherit content transfer encoding and character set */
set_string(&newp->content_transfer_encoding,
p->content_transfer_encoding);
rfc2045_setattr(&newp->content_type_attr, "charset",
rfc2045_getattr(p->content_type_attr, "charset"));
return (newp);
}
int libmail_gpgmime_is_decoded(const struct rfc2045 *q, int *retcode)
{
const char *p;
if (!q->content_type || strcasecmp(q->content_type,
"multipart/x-mimegpg"))
return (0);
p=rfc2045_getattr(q->content_type_attr, "xpgpstatus");
if (!p)
return (0);
*retcode=atoi(p);
return (1);
}
void rfc2045_mimeinfo(const struct rfc2045 *p,
const char **content_type_s,
const char **content_transfer_encoding_s,
const char **charset_s)
{
const char *c;
*content_type_s=GETINFO(p->content_type, "text/plain");
*content_transfer_encoding_s=GETINFO(p->content_transfer_encoding,
"8bit");
c=rfc2045_getattr(p->content_type_attr, "charset");
if (!c) c=rfc2045_getdefaultcharset();
*charset_s=c;
}
char *rfc2045_related_start(const struct rfc2045 *p)
{
const char *cb=rfc2045_getattr( p->content_type_attr, "start");
struct rfc822t *t;
struct rfc822a *a;
int i;
if (!cb || !*cb) return (0);
t=rfc822t_alloc_new(cb, 0, NULL);
if (!t)
{
rfc2045_enomem();
return(0);
}
a=rfc822a_alloc(t);
if (!a)
{
rfc822t_free(t);
rfc2045_enomem();
return (0);
}
for (i=0; i<a->naddrs; i++)
if (a->addrs[i].tokens)
{
char *s=rfc822_getaddr(a, i);
rfc822a_free(a);
rfc822t_free(t);
if (!s)
rfc2045_enomem();
return (s);
}
rfc822a_free(a);
rfc822t_free(t);
return (0);
}
int rfc2045_isflowed(const struct rfc2045 *p)
{
const char *cb=rfc2045_getattr(p->content_type_attr, "format");
return (cb && strcmp(cb, "flowed") == 0);
}
static void dsn(struct rfc2045 *p, int do_orig)
{
const char *content_type_s;
const char *content_transfer_encoding_s;
const char *charset_s;
off_t start_pos, end_pos, start_body;
off_t dummy;
const char *q;
char buf[BUFSIZ];
unsigned i;
int ch;
char *recip;
char *action;
char *orecip;
rfc2045_mimeinfo(p, &content_type_s, &content_transfer_encoding_s,
&charset_s);
if (strcasecmp(content_type_s, "multipart/report") ||
(q=rfc2045_getattr(p->content_type_attr, "report-type")) == 0 ||
strcasecmp(q, "delivery-status") ||
!p->firstpart || !p->firstpart->next ||
!p->firstpart->next->next)
_exit(1);
p=p->firstpart->next->next;
rfc2045_mimeinfo(p, &content_type_s, &content_transfer_encoding_s,
&charset_s);
rfc2045_mimepos(p, &start_pos, &end_pos, &start_body, &dummy, &dummy);
if (strcasecmp(content_type_s, "message/delivery-status") ||
fseek(stdin, start_body, SEEK_SET) == -1)
_exit(1);
i=0;
recip=0;
orecip=0;
action=0;
while (start_body < end_pos)
{
if ((ch=getchar()) == EOF) break;
++start_body;
if (i < sizeof(buf)-1)
buf[i++]= ch;
if (ch != '\n') continue;
ch=getchar();
if (ch != EOF) ungetc(ch, stdin);
if (ch != '\n' && isspace((int)(unsigned char)ch))
continue;
buf[i-1]=0;
if (buf[0] == 0)
{
if (orecip)
{
if (recip) free(recip);
recip=orecip;
orecip=0;
}
print_dsn_recip(recip, action);
recip=0;
action=0;
}
if (strncasecmp(buf, "Final-Recipient:", 16) == 0 &&
recip == 0)
{
recip=strdup(buf+16);
if (!recip)
{
perror("strdup");
exit(2);
}
}
if (strncasecmp(buf, "Original-Recipient:", 19) == 0 &&
orecip == 0 && do_orig)
{
orecip=strdup(buf+19);
if (!orecip)
{
perror("strdup");
exit(2);
}
}
if (strncasecmp(buf, "Action:", 7) == 0 && action == 0)
{
action=strdup(buf+7);
if (!action)
{
perror("strdup");
exit(2);
}
}
i=0;
}
if (orecip)
{
if (recip) free(recip);
recip=orecip;
orecip=0;
}
print_dsn_recip(recip, action);
}
int rfc2045_ac_check(struct rfc2045 *p, int rwmode)
{
int flag=0; /* Flag - rewriting suggested */
struct rfc2045 *c;
int hasnon7bit=p->has8bitchars;
/* hasnon7bit: 8bit chars in this section or subsections */
const char *te;
int is8bitte;
for (c=p->firstpart; c; c=c->next)
if (!c->isdummy)
{
if (rfc2045_ac_check(c, rwmode)) flag=1;
if (strcmp(c->content_transfer_encoding, "7bit") &&
strcmp(c->content_transfer_encoding, "quoted-printable"))
hasnon7bit=1;
if (c->has8bitchars)
p->has8bitchars=1;
}
if (RFC2045_ISMIME1DEF(p->mime_version) && !p->content_type)
{
if ((p->content_type=strdup("text/plain")) == 0)
rfc2045_enomem();
if (p->mime_version)
{
flag=1;
}
}
if (RFC2045_ISMIME1DEF(p->mime_version)
&& !rfc2045_getattr(p->content_type_attr, "charset")
&& strncasecmp(p->content_type, "text/", 5) == 0)
{
rfc2045_setattr(&p->content_type_attr, "charset",
rfc2045_getdefaultcharset());
if (p->mime_version
&& p->firstpart == 0 /* sam - don't trigger rewrites on changes to multipart headers */
)
{
flag=1;
}
}
if (RFC2045_ISMIME1DEF(p->mime_version)
&& !p->content_transfer_encoding)
{
if ((p->content_transfer_encoding=strdup(
hasnon7bit ? "8bit":"7bit")) == 0)
rfc2045_enomem();
if (p->mime_version
&& p->firstpart == 0 /* sam - don't trigger rewrites on changes to multipart headers */
)
{
flag=1;
}
}
#if 0
if (RFC2045_ISMIME1DEF(p->mime_version)
&& strncmp(p->content_type, "text/", 5) == 0 && !hasnon7bit
&& strcmp(p->content_transfer_encoding, "7bit"))
{
if (p->mime_version)
{
flag=1;
}
}
#endif
if (RFC2045_ISMIME1DEF(p->mime_version))
{
/* Check for conversions */
te=p->content_transfer_encoding;
is8bitte=strcasecmp(te, "base64") &&
strcasecmp(te, "quoted-printable") &&
strcasecmp(te, "7bit"); /* 8 bit contents */
if (is8bitte && !p->has8bitchars && !p->haslongline)
{
if (p->rw_transfer_encoding)
free(p->rw_transfer_encoding);
if ((p->rw_transfer_encoding=strdup("7bit")) == 0)
rfc2045_enomem();
flag=1;
is8bitte=0;
}
if (rwmode == RFC2045_RW_7BIT && (is8bitte || p->haslongline))
{
if (p->rw_transfer_encoding)
free(p->rw_transfer_encoding);
if ((p->rw_transfer_encoding=strdup("quoted-printable"))
== 0)
rfc2045_enomem();
flag=1;
}
else if (rwmode == RFC2045_RW_8BIT &&
strcasecmp(te, "quoted-printable") == 0 &&
!p->haslongline)
{
if (p->rw_transfer_encoding)
free(p->rw_transfer_encoding);
if ((p->rw_transfer_encoding=strdup(hasnon7bit
? "8bit":"7bit")) == 0)
rfc2045_enomem();
flag=1;
}
}
if (!p->mime_version)
{
if ((p->mime_version=strdup("1.0")) == 0)
rfc2045_enomem();
}
return (flag);
}