Exemplo n.º 1
0
void rfc2045_free(struct rfc2045 *p)
{
struct rfc2045 *q, *r;

	for (q=p->firstpart; q; )
	{
		r=q->next;
		rfc2045_free(q);
		q=r;
	}
	rfc2045_freeattr(p->content_type_attr);
	rfc2045_freeattr(p->content_disposition_attr);

	if (p->header)		free(p->header);
	if (p->content_md5)	free(p->content_md5);
	if (p->content_base)	free(p->content_base);
	if (p->content_location)	free(p->content_location);
	if (p->content_language)	free(p->content_language);
	if (p->content_id)	free(p->content_id);
	if (p->content_description)	free(p->content_description);
	if (p->content_transfer_encoding) free(p->content_transfer_encoding);
	if (p->boundary) free(p->boundary);
	if (p->content_type)	free(p->content_type);
	if (p->mime_version)	free(p->mime_version);
	if (p->workbuf)		free(p->workbuf);
	if (p->content_disposition) free(p->content_disposition);
	if (p->rw_transfer_encoding) free(p->rw_transfer_encoding);
	free(p);
}
Exemplo n.º 2
0
int main(int argc, char **argv)
{
	FILE *fp;
	struct rfc2045 *rfc;
	struct msg2html_info *info;

	if (argc < 2)
		return 0;

	if ((fp=fopen(argv[1], "r")) == NULL)
	{
		perror(argv[1]);
		exit(1);
	}

	rfc=rfc2045_fromfp(fp);

	info=msg2html_alloc("utf-8");
	info->showhtml=1;
	msg2html(fp, rfc, info);
	fclose(fp);
	msg2html_free(info);
	rfc2045_free(rfc);
	return (0);
}
Exemplo n.º 3
0
void fetch_free_cached()
{
	if (cached_rfc2045p)
	{
		rfc2045_free(cached_rfc2045p);
		cached_rfc2045p=0;
		free(cached_filename);
		cached_filename=0;
	}
}
Exemplo n.º 4
0
Arquivo: newmsg.c Projeto: zixia/wmail
static void show_preview(const char *filename)
{
char	*header, *value;
struct	rfc2045	*rfcp;
FILE	*fp;
int	fd;

	fp=0;
	fd=maildir_safeopen(filename, O_RDONLY, 0);
	if (fd >= 0)
		if ((fp=fdopen(fd, "r")) == 0)
			close(fd);

	if (!fp)	return;

	while ((header=maildir_readheader(fp, &value, 1)) != 0)
	{
		/* Don't show X-, From, and Content- headers in preview */

		if (strncmp(header, "x-", 2) == 0)	continue;
		if (strcmp(header, "mime-version") == 0)	continue;
		if (strncmp(header, "content-", 8) == 0)	continue;

		printf("%c", toupper(*header));
		output_attrencoded_oknl(header+1);
		printf(": ");

		value=rfc2047_decode_enhanced(value, sqwebmail_content_charset);
		if (value)
		{
			output_attrencoded_oknl(value);
			free(value);
		}
		printf("\n");
	}
	printf("\n");

	rfcp=rfc2045_fromfp(fp);
	if (!rfcp)	return;

	filter_start(FILTER_FOR_PREVIEW, &preview_show_func_s);
	{
		struct rfc2045 *q=
			rfc2045_searchcontenttype(rfcp, "text/plain");

		if (q)
			rfc2045_decodemimesection(fileno(fp), q,
						  &filter_stub, NULL);
	}
	rfc2045_free(rfcp);
	filter_end();
}
Exemplo n.º 5
0
void newmsg_showfp(FILE *fp, int *attachcnt)
{
	struct	rfc2045 *p=rfc2045_fromfp(fp), *q;

	if (!p)	enomem();

	/* Here's a nice opportunity to count all attachments */

	*attachcnt=0;

	for (q=p->firstpart; q; q=q->next)
		if (!q->isdummy)	++*attachcnt;
	if (*attachcnt)	--*attachcnt;
	/* Not counting the 1st MIME part */

	{
		const char *content_type;
		const char *content_transfer_encoding;
		const char *charset;

		rfc2045_mimeinfo(p, &content_type,
				 &content_transfer_encoding, &charset);

		if (content_type &&
		    strcmp(content_type, "multipart/alternative") == 0)
			*attachcnt=0;
	}

	q=rfc2045_searchcontenttype(p, "text/plain");

	if (q)
	{
		struct rfc2045src *src=rfc2045src_init_fd(fileno(fp));

		if (src)
		{
			struct show_textarea_info info;

			show_textarea_init(&info, 1);

			rfc2045_decodetextmimesection(src, q,
						      sqwebmail_content_charset,
						      NULL,
						      &show_textarea_trampoline,
						      &info);
			rfc2045src_deinit(src);
			show_textarea(&info, "\n", 1);
		}
	}
	rfc2045_free(p);
}
Exemplo n.º 6
0
struct rfc2045 *rfc2045header_fromfd(int fd)
{
struct        rfc2045        *rfc;
char        buf[BUFSIZ];
int        n;
off_t        orig_pos;

        if ((orig_pos=lseek(fd, 0L, SEEK_CUR)) == (off_t)-1) return (NULL);
        if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1)        return (NULL);
        if ((rfc=rfc2045_alloc()) == 0)        return (NULL);

        while (rfc->workinheader && (n=read(fd, buf, sizeof(buf))) > 0)
                rfc2045_parse(rfc, buf, n);
        if (lseek(fd, orig_pos, SEEK_SET) == (off_t)-1)
        {
                rfc2045_free(rfc);
                rfc=0;
        }
        return (rfc);
}
Exemplo n.º 7
0
Arquivo: newmsg.c Projeto: zixia/wmail
void newmsg_showfp(FILE *fp, int *attachcnt)
{
	struct	rfc2045 *p=rfc2045_fromfp(fp), *q;

	if (!p)	enomem();

	/* Here's a nice opportunity to count all attachments */

	*attachcnt=0;

	for (q=p->firstpart; q; q=q->next)
		if (!q->isdummy)	++*attachcnt;
	if (*attachcnt)	--*attachcnt;
	/* Not counting the 1st MIME part */

	q=rfc2045_searchcontenttype(p, "text/plain");

	if (q)
		rfc2045_decodemimesection(fileno(fp), q,
					  &show_textarea, NULL);
	rfc2045_free(p);
}
Exemplo n.º 8
0
static int search_spell(const char *filename, unsigned parnum, unsigned pos)
{
struct	rfc2045	*rfcp, *textp;
struct	buf newtext, current_line;
off_t start_pos, end_pos, start_body;
int	made_replacements, has_misspelling;
char *new_line;
unsigned paragraph;
const char	*ignoreword="";
const char	*replacefrom="";
const char	*replaceto="";
int	checked=0;
off_t	dummy;
FILE	*fp=0;
int	x;

	x=maildir_safeopen(filename, O_RDONLY, 0);
	if (x >= 0)
		if ((fp=fdopen(x, "r")) == 0)
			close(x);

	if (!fp)	return (0);
	rfcp=rfc2045_fromfp(fp);
	if (!rfcp)	enomem();

	textp=findtext(rfcp);

	if (!textp)
	{
		rfc2045_free(rfcp);
		fclose(fp);
		return (0);
	}

	buf_init(&newtext);
	buf_init(&current_line);

        rfc2045_mimepos(textp, &start_pos, &end_pos, &start_body,
		&dummy, &dummy);
        if (fseek(fp, start_body, SEEK_SET) == -1)
                enomem();

	made_replacements=0;
	has_misspelling=0;
	paragraph=0;
        for ( ; start_body < end_pos; start_body++)
	{
	int	c=getc(fp);

		if (c < 0)	enomem();
		if (c != '\n')
		{
			buf_append(&current_line, c);
			continue;
		}
		buf_append(&current_line, '\0');
		if (parnum)
		{
			--parnum;
			buf_cat(&newtext, current_line.ptr);
			buf_cat(&newtext, "\n");
			current_line.cnt=0;
			++paragraph;
			continue;
		}

		if (!checked)
		{
		int	l;

			checked=1;
			if ((l=strlen(cgi("word"))) > 0)
			{

/* Ok, what should we do? */

			const char *newword=cgi("REPLACE");

				if (!*newword || strcmp(newword, "#other") == 0)
					newword=cgi("OTHER");
				/*
				** Perhaps they entered the word without
				** checking this checkmark.
				*/
				else if (*newword == '#')
					newword="";

				if (*newword && pos + l <= strlen(current_line.ptr))
				{
				struct buf tempbuf;

					buf_init(&tempbuf);
					buf_cpyn(&tempbuf, current_line.ptr,
						pos);
					buf_cat(&tempbuf, newword);
					buf_cat(&tempbuf,
						current_line.ptr+pos+l);
					pos += strlen(newword);
					if (*cgi("REPLACEALL"))
					{
						replacefrom=cgi("word");
						replaceto=newword;
					}
					buf_append(&tempbuf, '\0');
					buf_cpy(&current_line, tempbuf.ptr);
					buf_append(&current_line, '\0');
					buf_free(&tempbuf);
					made_replacements=1;
				}
				else
				{
					pos += l;
					if (strcmp(cgi("REPLACE"),
						"#ignoreall") == 0)
						ignoreword=cgi("word");
				}

				if (strcmp(cgi("REPLACE"),
						"#insert") == 0)
				{
					spelladd(cgi("word"));
				}
			}
		}


		if (*current_line.ptr == '>')
		{
			buf_cat(&newtext, current_line.ptr);
			buf_cat(&newtext, "\n");
			pos=0;
			current_line.cnt=0;
			++paragraph;
			continue;
		}
		if (!has_misspelling)
		{
			new_line=spell_check(current_line.ptr, paragraph, pos,
				ignoreword, replacefrom, replaceto,
				&has_misspelling);
			if (new_line)
			{
				buf_cat(&newtext, new_line);
				free(new_line);
				made_replacements=1;
			}
			else	buf_cat(&newtext, current_line.ptr);
		}
		else	buf_cat(&newtext, current_line.ptr);
		buf_cat(&newtext, "\n");
		pos=0;
		current_line.cnt=0;
		++paragraph;
	}
	if (current_line.cnt)
		buf_cat(&newtext, "\n");
	rfc2045_free(rfcp);
	fclose(fp);
	if (made_replacements)
	{
	char	*p=newmsg_createdraft_do(filename, newtext.ptr,
					 NEWMSG_SQISPELL);

		if (p)	free(p);

		if (*cgi("error"))
		{
			has_misspelling=0;	/* Abort spell checking */
		}
	}

	buf_free(&newtext);
	buf_free(&current_line);

	if (*ignoreword)
	{
	static char *p=0;

		if (p)	free(p);
		p=malloc(strlen(cgi("globignore")) + 2 + strlen(ignoreword));

		if (!p)	enomem();

		strcpy(p, cgi("globignore"));
		if (*p)	strcat(p, ":");
		strcat(p, ignoreword);
		cgi_put("globignore", p);
	}

	if (*replacefrom)
	{
	static char *p=0;

		if (p)	free(p);
		p=malloc(strlen(cgi("globreplace"))+3
			+strlen(replacefrom)+strlen(replaceto));

		if (!p)	enomem();
		strcpy(p, cgi("globreplace"));
		if (*p)	strcat(p, ":");
		strcat(strcat(strcat(p, replacefrom), ":"), replaceto);
		cgi_put("globreplace", p);
		free(p);
	}
	if (has_misspelling)	return (1);
	return (0);
}
Exemplo n.º 9
0
int main(int argc, char **argv)
{
	int argn;
	FILE *tmpfp;
	struct rfc2045 *rfcp;
	struct mimeautoreply_s replyinfo;
	const char *subj=0;
	const char *txtfile=0, *mimefile=0;
	const char *mimedsn=0;
	int nosend=0;
	const char *replymode="reply";
	int replytoenvelope=0;
	int donotquote=0;
	const char *forwardsep="--- Forwarded message ---";
	const char *replysalut="%F writes:";
	struct rfc2045src *src;

	setlocale(LC_ALL, "");
	charset=unicode_default_chset();

	sender=NULL;
	for (argn=1; argn < argc; argn++)
	{
		char optc;
		char *optarg;

		if (argv[argn][0] != '-')
			break;

		if (strcmp(argv[argn], "--") == 0)
		{
			++argn;
			break;
		}

		optc=argv[argn][1];
		optarg=argv[argn]+2;

		if (!*optarg)
			optarg=NULL;

		switch (optc) {
		case 'c':
			if (!optarg && argn+1 < argc)
				optarg=argv[++argn];

			if (optarg && *optarg)
			{
				char *p=libmail_u_convert_tobuf("",
								optarg,
								libmail_u_ucs4_native,
								NULL);

				if (!p)
				{
					fprintf(stderr, "Unknown charset: %s\n",
						charset);
					exit(1);
				}
				free(p);
				charset=optarg;
			}
			continue;
		case 't':
			if (!optarg && argn+1 < argc)
				optarg=argv[++argn];

			txtfile=optarg;
			continue;
		case 'm':
			if (!optarg && argn+1 < argc)
				optarg=argv[++argn];

			mimefile=optarg;
			continue;
		case 'r':
			if (!optarg && argn+1 < argc)
				optarg=argv[++argn];

			recips=optarg;
			continue;
		case 'M':
			if (!optarg && argn+1 < argc)
				optarg=argv[++argn];

			mimedsn=optarg;
			continue;
		case 'd':
			if (!optarg && argn+1 < argc)
				optarg=argv[++argn];

			dbfile=optarg;
			continue;
		case 'e':
			replytoenvelope=1;
			continue;
		case 'T':
			if (!optarg && argn+1 < argc)
				optarg=argv[++argn];

			if (optarg && *optarg)
				replymode=optarg;
			continue;
		case 'N':
			donotquote=1;
			continue;
		case 'F':
			if (!optarg && argn+1 < argc)
				optarg=argv[++argn];

			if (optarg && *optarg)
				forwardsep=optarg;
			continue;
		case 'S':
			if (!optarg && argn+1 < argc)
				optarg=argv[++argn];

			if (optarg && *optarg)
				replysalut=optarg;
			continue;
		case 'D':
			if (!optarg && argn+1 < argc)
				optarg=argv[++argn];

			interval=optarg ? atoi(optarg):1;
			continue;
		case 'A':
			if (!optarg && argn+1 < argc)
				optarg=argv[++argn];

			if (optarg)
			{
				struct header **h;

				for (h= &extra_headers; *h;
				     h= &(*h)->next)
					;

				if ((*h=malloc(sizeof(struct header))) == 0 ||
				    ((*h)->buf=strdup(optarg)) == 0)
				{
					perror("malloc");
					exit(EX_TEMPFAIL);
				}
				(*h)->next=0;
			}
			continue;
		case 's':
			if (!optarg && argn+1 < argc)
				optarg=argv[++argn];

			subj=optarg;
			continue;

		case 'f':
			if (optarg && *optarg)
			{
				sender=strdup(optarg);
			}
			else
			{
				sender=getenv("SENDER");
				if (!sender)
					continue;
				sender=strdup(sender);
			}
			if (sender == NULL)
			{
				perror("malloc");
				exit(1);
			}
			continue;
		case 'n':
			nosend=1;
			continue;
		default:
			usage();
		}
	}

	if (!txtfile && !mimefile)
		usage();

	if (txtfile && mimefile)
		usage();

	tmpfp=tmpfile();

	if (!tmpfp)
	{
		perror("tmpfile");
		exit(1);
	}

	rfcp=savemessage(tmpfp);

	if (fseek(tmpfp, 0L, SEEK_SET) < 0)
	{
		perror("fseek(tempfile)");
		exit(1);
	}

	read_headers(tmpfp);

	if (sender == NULL || *sender == 0)
		check_sender();

	check_dsn();
	check_recips();
#ifdef DbObj
	check_db();
#endif

	src=rfc2045src_init_fd(fileno(tmpfp));

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

	replyinfo.info.src=src;
	replyinfo.info.rfc2045partp=rfcp;
	replyinfo.info.voidarg=&replyinfo;

	replyinfo.info.write_func=mimeautoreply_write_func;

	replyinfo.info.writesig_func=mimeautoreply_writesig_func;

	replyinfo.info.myaddr_func=mimeautoreply_myaddr_func;

	replyinfo.info.replymode=replymode;
	replyinfo.info.replytoenvelope=replytoenvelope;
	replyinfo.info.donotquote=donotquote;

	replyinfo.info.replysalut=replysalut;
	replyinfo.info.forwarddescr="Forwarded message";
	replyinfo.info.mailinglists="";
	replyinfo.info.charset=charset;
	replyinfo.info.subject=subj;
	replyinfo.info.forwardsep=forwardsep;

	if (mimedsn && *mimedsn)
	{
		replyinfo.info.dsnfrom=mimedsn;
		replyinfo.info.replymode="replydsn";
	}

	if (mimefile)
	{
		if ((replyinfo.contentf=fopen(mimefile, "r")) == NULL)
		{
			perror(mimefile);
			exit(1);
		}

		{
			struct rfc2045 *rfcp=rfc2045_alloc();
			static const char mv[]="Mime-Version: 1.0\n";
			char buf[BUFSIZ];
			int l;
			const char *content_type;
			const char *content_transfer_encoding;
			const char *charset;

			rfc2045_parse(rfcp, mv, sizeof(mv)-1);

			while ((l=fread(buf, 1, sizeof(buf), replyinfo.contentf)
				) > 0)
			{
				rfc2045_parse(rfcp, buf, l);
			}

			if (l < 0 ||
			    fseek(replyinfo.contentf, 0L, SEEK_SET) < 0)
			{
				perror(mimefile);
				exit(1);
			}

			rfc2045_mimeinfo(rfcp, &content_type,
					 &content_transfer_encoding,
					 &charset);

			if (strcasecmp(content_type, "text/plain"))
			{
				fprintf(stderr,
					"%s must specify text/plain MIME type\n",
					mimefile);
				exit(1);
			}
			{
				char *p=NULL;

				if (charset)
					p=libmail_u_convert_tobuf("",
								  charset,
								  libmail_u_ucs4_native,
								  NULL);

				if (!p)
				{
					fprintf(stderr, "Unknown charset in %s\n",
						mimefile);
					exit(1);
				}
				free(p);
				replyinfo.info.charset=strdup(charset);
			}
			rfc2045_free(rfcp);
		}
		replyinfo.info.content_set_charset=copy_headers;
		replyinfo.info.content_specify=copy_body;
	}
	else if (txtfile)
	{
		if ((replyinfo.contentf=fopen(txtfile, "r")) == NULL)
		{
			perror(mimefile);
			exit(1);
		}
		replyinfo.info.content_specify=copy_body;
	}

	if (replyinfo.contentf)
		fcntl(fileno(replyinfo.contentf), F_SETFD, FD_CLOEXEC);

	if (nosend)
		replyinfo.outf=stdout;
	else
	{
		replyinfo.outf=tmpfile();

		if (replyinfo.outf == NULL)
		{
			perror("tmpfile");
			exit(1);
		}
	}

	{
		struct header *h;

		for (h=extra_headers; h; h=h->next)
			fprintf(replyinfo.outf, "%s\n", h->buf);
	}
	fprintf(replyinfo.outf,
		"Precedence: junk\n"
		"Auto-Submitted: auto-replied\n");

	if (rfc2045_makereply(&replyinfo.info) < 0 ||
	    fflush(replyinfo.outf) < 0 || ferror(replyinfo.outf) ||
	    (!nosend &&
	     (
	      fseek(replyinfo.outf, 0L, SEEK_SET) < 0 ||
	      (close(0), dup(fileno(replyinfo.outf))) < 0)
	     ))
	{
		perror("tempfile");
		exit(1);
	}
	fclose(replyinfo.outf);
	fcntl(0, F_SETFD, 0);

	rfc2045_free(rfcp);
	rfc2045src_deinit(src);

	if (!nosend)
		opensendmail(argn, argc, argv);
	return (0);
}
Exemplo n.º 10
0
char *newmsg_newdraft(const char *folder, const char *pos,
			const char *forwardsep, const char *replysalut)
{
char	*filename=0;
char	*replymode;
size_t	pos_n;
FILE	*fp;

const	char *mimeidptr;
char	*draftfilename;
struct	rfc2045 *rfc2045p, *rfc2045partp;
int	x;

	if (*cgi(replymode="reply") ||
		*cgi(replymode="replyall") ||
		*cgi(replymode="replylist") ||
		*cgi(replymode="forward") ||
		*cgi(replymode="forwardatt"))
	{
		pos_n=atol(pos);

		filename=get_msgfilename(folder, &pos_n);
	}

	if (!filename)	return (0);

	fp=0;
	x=maildir_semisafeopen(filename, O_RDONLY, 0);

	if (x >= 0)
		if ((fp=fdopen(x, "r")) == 0)
			close(x);

	if (fp == 0)
	{
		free(filename);
		return (0);
	}

	rfc2045p=rfc2045_fromfp(fp);

	if (!rfc2045p)
	{
		fclose(fp);
		enomem();
	}

	mimeidptr=cgi("mimeid");

	rfc2045partp=0;

	if (*mimeidptr)
	{
		rfc2045partp=rfc2045_find(rfc2045p, mimeidptr);
		if (rfc2045partp)
		{
		const char      *content_type, *dummy;

			rfc2045_mimeinfo(rfc2045partp, &content_type,
				&dummy, &dummy);

			if (!content_type || strcmp(content_type, "message/rfc822"))
				rfc2045partp=0;
			else
				rfc2045partp=rfc2045partp->firstpart;
		}
	}

	if (!rfc2045partp)
		rfc2045partp=rfc2045p;


	draftfd=maildir_createmsg(DRAFTS, 0, &draftfilename);
	if (draftfd < 0)
	{
		fclose(fp);
		rfc2045_free(rfc2045p);
		enomem();
	}

	maildir_writemsgstr(draftfd, "From: ");
	{
	const char *f=pref_from;

		if (!f || !*f)	f=login_fromhdr();
		if (!f)	f="";
		maildir_writemsgstr(draftfd, f);
		maildir_writemsgstr(draftfd, "\n");
	}

	{
		char *ml=getmailinglists();
		struct rfc2045_mkreplyinfo ri;
		int rc;

		memset(&ri, 0, sizeof(ri));
		ri.fd=fileno(fp);
		ri.rfc2045partp=rfc2045partp;
		ri.replymode=replymode;
		ri.replysalut=replysalut;
		ri.forwardsep=forwardsep;
		ri.myaddr_func=ismyaddr;
		ri.write_func=writefunc;
		ri.writesig_func=newmsg_writesig;
		ri.mailinglists=ml;
		ri.charset=sqwebmail_content_charset;

		if (strcmp(replymode, "forward") == 0
		    || strcmp(replymode, "forwardatt") == 0)
		{
#if	HAVE_SQWEBMAIL_UNICODE
			rc=rfc2045_makereply_unicode(&ri);
#else
			rc=rfc2045_makereply(&ri);
#endif
		}
		else
		{
		char *basename=maildir_basename(filename);

			maildir_writemsgstr(draftfd, "X-Reply-To-Folder: ");
			maildir_writemsgstr(draftfd, folder);
			maildir_writemsgstr(draftfd, "\nX-Reply-To-Msg: ");

			maildir_writemsgstr(draftfd, basename);
			free(basename);
			maildir_writemsgstr(draftfd, "\n");

#if	HAVE_SQWEBMAIL_UNICODE
			rc=rfc2045_makereply_unicode(&ri);
#else
			rc=rfc2045_makereply(&ri);
#endif
		}
		free(ml);

		if (rc)
		{
			fclose(fp);
			close(draftfd);
			rfc2045_free(rfc2045p);
			enomem();
		}
	}

	fclose(fp);
	if (maildir_closemsg(draftfd, DRAFTS, draftfilename, 1, 0))
	{
		free(draftfilename);
		draftfilename=0;
		cgi_put("error", "quota");
	}
	free(filename);
	rfc2045_free(rfc2045p);
	return(draftfilename);
}
Exemplo n.º 11
0
SubmitFile::~SubmitFile()
{
	interrupt();
	current_submit_file=0;
	if (rwrfcptr)	rfc2045_free(rwrfcptr);
}
Exemplo n.º 12
0
int main(int argc, char **argv)
{
int	argn;
char	optc;
char	*optarg;
char	*mimesection=0;
int	doinfo=0, dodecode=0, dorewrite=0, dodsn=0, domimedigest=0;
struct	rfc2045 *p;
int	rwmode=0;
void	(*do_extract)(struct rfc2045 *, const char *, int, char **)=0;
const char *extract_filename=0;

	for (argn=1; argn<argc; )
	{
		if (argv[argn][0] != '-')	break;
		optarg=0;
		optc=argv[argn][1];
		if (optc && argv[argn][2])	optarg=argv[argn]+2;
		++argn;
		switch	(optc)	{
		case 'c':
			if (!optarg && argn < argc)
				optarg=argv[argn++];
			if (optarg && *optarg)
				rfc2045_setdefaultcharset(optarg);
			break;

		case 's':
			if (!optarg && argn < argc)
				optarg=argv[argn++];
			if (optarg && *optarg)	mimesection=optarg;
			break;
		case 'i':
			doinfo=1;
			break;
		case 'e':
			dodecode=1;
			break;
		case 'r':
			dorewrite=1;
			if (optarg && *optarg == '7')
				rwmode=RFC2045_RW_7BIT;
			if (optarg && *optarg == '8')
				rwmode=RFC2045_RW_8BIT;
			break;
		case 'm':
			domimedigest=1;
			break;
		case 'd':
			dodsn=1;
			break;
		case 'D':
			dodsn=2;
			break;
		case 'x':
			do_extract=extract_file;
			if (optarg)
				extract_filename=optarg;
			break;
		case 'X':
			do_extract=extract_pipe;
			break;
		case 'v':
			printf("%s\n", rcsid);
			exit(0);
		default:
			usage();
		}
	}

	if (domimedigest)
	{
		mimedigest(argc-argn, argv+argn);
		return (0);
	}

	p=read_message();

	if (doinfo)
		print_info(p, mimesection);
	else if (dodecode)
		print_decode(p, mimesection);
	else if (dorewrite)
		rewrite(p, rwmode);
	else if (dodsn)
		dsn(p, dodsn == 2);
	else if (do_extract)
		extract_section(p, mimesection, extract_filename,
			argc-argn, argv+argn, do_extract);
	else
		print_structure(p);
	rfc2045_free(p);
	exit(0);
	return (0);
}