From a150899221a5badff9740703b754f901b4f52762 Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@localhost>
Date: Thu, 14 Apr 2011 17:27:24 +0000
Subject: fill /acme

---
 acme/mail/src/reply.c | 567 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 567 insertions(+)
 create mode 100644 acme/mail/src/reply.c

(limited to 'acme/mail/src/reply.c')

diff --git a/acme/mail/src/reply.c b/acme/mail/src/reply.c
new file mode 100644
index 000000000..65841c570
--- /dev/null
+++ b/acme/mail/src/reply.c
@@ -0,0 +1,567 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include <thread.h>
+#include <ctype.h>
+#include <plumb.h>
+#include "dat.h"
+
+static int	replyid;
+
+int
+quote(Message *m, Biobuf *b, char *dir, char *quotetext)
+{
+	char *body, *type;
+	int i, n, nlines;
+	char **lines;
+
+	if(quotetext){
+		body = quotetext;
+		n = strlen(body);
+		type = nil;
+	}else{
+		/* look for first textual component to quote */
+		type = readfile(dir, "type", &n);
+		if(type == nil){
+			print("no type in %s\n", dir);
+			return 0;
+		}
+		if(strncmp(type, "multipart/", 10)==0 || strncmp(type, "message/", 8)==0){
+			dir = estrstrdup(dir, "1/");
+			if(quote(m, b, dir, nil)){
+				free(type);
+				free(dir);
+				return 1;
+			}
+			free(dir);
+		}
+		if(strncmp(type, "text", 4) != 0){
+			free(type);
+			return 0;
+		}
+		body = readbody(m->type, dir, &n);
+		if(body == nil)
+			return 0;
+	}
+	nlines = 0;
+	for(i=0; i<n; i++)
+		if(body[i] == '\n')
+			nlines++;
+	nlines++;
+	lines = emalloc(nlines*sizeof(char*));
+	nlines = getfields(body, lines, nlines, 0, "\n");
+	/* delete leading and trailing blank lines */
+	i = 0;
+	while(i<nlines && lines[i][0]=='\0')
+		i++;
+	while(i<nlines && lines[nlines-1][0]=='\0')
+		nlines--;
+	while(i < nlines){
+		Bprint(b, ">%s%s\n", lines[i][0]=='>'? "" : " ", lines[i]);
+		i++;
+	}
+	free(lines);
+	free(body);	/* will free quotetext if non-nil */
+	free(type);
+	return 1;
+}
+
+void
+mkreply(Message *m, char *label, char *to, Plumbattr *attr, char *quotetext)
+{
+	Message *r;
+	char *dir, *t;
+	int quotereply;
+	Plumbattr *a;
+
+	quotereply = (label[0] == 'Q');
+	r = emalloc(sizeof(Message));
+	r->isreply = 1;
+	if(m != nil)
+		r->replyname = estrdup(m->name);
+	r->next = replies.head;
+	r->prev = nil;
+	if(replies.head != nil)
+		replies.head->prev = r;
+	replies.head = r;
+	if(replies.tail == nil)
+		replies.tail = r;
+	r->name = emalloc(strlen(mbox.name)+strlen(label)+10);
+	sprint(r->name, "%s%s%d", mbox.name, label, ++replyid);
+	r->w = newwindow();
+	winname(r->w, r->name);
+	ctlprint(r->w->ctl, "cleartag");
+	wintagwrite(r->w, "fmt Look Post Undo", 4+5+5+4);
+	r->tagposted = 1;
+	threadcreate(mesgctl, r, STACK);
+	winopenbody(r->w, OWRITE);
+	if(to!=nil && to[0]!='\0')
+		Bprint(r->w->body, "%s\n", to);
+	for(a=attr; a; a=a->next)
+		Bprint(r->w->body, "%s: %s\n", a->name, a->value);
+	dir = nil;
+	if(m != nil){
+		dir = estrstrdup(mbox.name, m->name);
+		if(to == nil && attr == nil){
+			/* Reply goes to replyto; Reply all goes to From and To and CC */
+			if(strstr(label, "all") == nil)
+				Bprint(r->w->body, "To: %s\n", m->replyto);
+			else{	/* Replyall */
+				if(strlen(m->from) > 0)
+					Bprint(r->w->body, "To: %s\n", m->from);
+				if(strlen(m->to) > 0)
+					Bprint(r->w->body, "To: %s\n", m->to);
+				if(strlen(m->cc) > 0)
+					Bprint(r->w->body, "CC: %s\n", m->cc);
+			}
+		}
+		if(strlen(m->subject) > 0){
+			t = "Subject: Re: ";
+			if(strlen(m->subject) >= 3)
+				if(tolower(m->subject[0])=='r' && tolower(m->subject[1])=='e' && m->subject[2]==':')
+					t = "Subject: ";
+			Bprint(r->w->body, "%s%s\n", t, m->subject);
+		}
+		if(!quotereply){
+			Bprint(r->w->body, "Include: %sraw\n", dir);
+			free(dir);
+		}
+	}
+	Bprint(r->w->body, "\n");
+	if(m == nil)
+		Bprint(r->w->body, "\n");
+	else if(quotereply){
+		quote(m, r->w->body, dir, quotetext);
+		free(dir);
+	}
+	winclosebody(r->w);
+	if(m==nil && (to==nil || to[0]=='\0'))
+		winselect(r->w, "0", 0);
+	else
+		winselect(r->w, "$", 0);
+	winclean(r->w);
+	windormant(r->w);
+}
+
+void
+delreply(Message *m)
+{
+	if(m->next == nil)
+		replies.tail = m->prev;
+	else
+		m->next->prev = m->prev;
+	if(m->prev == nil)
+		replies.head = m->next;
+	else
+		m->prev->next = m->next;
+	mesgfreeparts(m);
+	free(m);
+}
+
+/* copy argv to stack and free the incoming strings, so we don't leak argument vectors */
+void
+buildargv(char **inargv, char *argv[NARGS+1], char args[NARGCHAR])
+{
+	int i, n;
+	char *s, *a;
+
+	s = args;
+	for(i=0; i<NARGS; i++){
+		a = inargv[i];
+		if(a == nil)
+			break;
+		n = strlen(a)+1;
+		if((s-args)+n >= NARGCHAR)	/* too many characters */
+			break;
+		argv[i] = s;
+		memmove(s, a, n);
+		s += n;
+		free(a);
+	}
+	argv[i] = nil;
+}
+
+void
+execproc(void *v)
+{
+	struct Exec *e;
+	int p[2], q[2];
+	char *prog;
+	char *argv[NARGS+1], args[NARGCHAR];
+
+	e = v;
+	p[0] = e->p[0];
+	p[1] = e->p[1];
+	q[0] = e->q[0];
+	q[1] = e->q[1];
+	prog = e->prog;	/* known not to be malloc'ed */
+	rfork(RFFDG);
+	sendul(e->sync, 1);
+	buildargv(e->argv, argv, args);
+	free(e->argv);
+	chanfree(e->sync);
+	free(e);
+	dup(p[0], 0);
+	close(p[0]);
+	close(p[1]);
+	if(q[0]){
+		dup(q[1], 1);
+		close(q[0]);
+		close(q[1]);
+	}
+	procexec(nil, prog, argv);
+//fprint(2, "exec: %s", e->prog);
+//{int i;
+//for(i=0; argv[i]; i++) print(" '%s'", argv[i]);
+//print("\n");
+//}
+//argv[0] = "cat";
+//argv[1] = nil;
+//procexec(nil, "/bin/cat", argv);
+	fprint(2, "Mail: can't exec %s: %r\n", prog);
+	threadexits("can't exec");
+}
+
+enum{
+	ATTACH,
+	BCC,
+	CC,
+	FROM,
+	INCLUDE,
+	TO,
+};
+
+char *headers[] = {
+	"attach:",
+	"bcc:",
+	"cc:",
+	"from:",
+	"include:",
+	"to:",
+	nil,
+};
+
+int
+whichheader(char *h)
+{
+	int i;
+
+	for(i=0; headers[i]!=nil; i++)
+		if(cistrcmp(h, headers[i]) == 0)
+			return i;
+	return -1;
+}
+
+char *tolist[200];
+char	*cclist[200];
+char	*bcclist[200];
+int ncc, nbcc, nto;
+char	*attlist[200];
+char	included[200];
+
+int
+addressed(char *name)
+{
+	int i;
+
+	for(i=0; i<nto; i++)
+		if(strcmp(name, tolist[i]) == 0)
+			return 1;
+	for(i=0; i<ncc; i++)
+		if(strcmp(name, cclist[i]) == 0)
+			return 1;
+	for(i=0; i<nbcc; i++)
+		if(strcmp(name, bcclist[i]) == 0)
+			return 1;
+	return 0;
+}
+
+char*
+skipbl(char *s, char *e)
+{
+	while(s < e){
+		if(*s!=' ' && *s!='\t' && *s!=',')
+			break;
+		s++;
+	}
+	return s;
+}
+
+char*
+findbl(char *s, char *e)
+{
+	while(s < e){
+		if(*s==' ' || *s=='\t' || *s==',')
+			break;
+		s++;
+	}
+	return s;
+}
+
+/*
+ * comma-separate possibly blank-separated strings in line; e points before newline
+ */
+void
+commas(char *s, char *e)
+{
+	char *t;
+
+	/* may have initial blanks */
+	s = skipbl(s, e);
+	while(s < e){
+		s = findbl(s, e);
+		if(s == e)
+			break;
+		t = skipbl(s, e);
+		if(t == e)	/* no more words */
+			break;
+		/* patch comma */
+		*s++ = ',';
+		while(s < t)
+			*s++ = ' ';
+	}
+}
+
+int
+print2(int fd, int ofd, char *fmt, ...)
+{
+	int m, n;
+	char *s;
+	va_list arg;
+
+	va_start(arg, fmt);
+	s = vsmprint(fmt, arg);
+	va_end(arg);
+	if(s == nil)
+		return -1;
+	m = strlen(s);
+	n = write(fd, s, m);
+	if(ofd > 0)
+		write(ofd, s, m);
+	return n;
+}
+
+void
+write2(int fd, int ofd, char *buf, int n, int nofrom)
+{
+	char *from, *p;
+	int m;
+
+	write(fd, buf, n);
+
+	if(ofd <= 0)
+		return;
+
+	if(nofrom == 0){
+		write(ofd, buf, n);
+		return;
+	}
+
+	/* need to escape leading From lines to avoid corrupting 'outgoing' mailbox */
+	for(p=buf; *p; p+=m){
+		from = cistrstr(p, "from");
+		if(from == nil)
+			m = n;
+		else
+			m = from - p;
+		if(m > 0)
+			write(ofd, p, m);
+		if(from){
+			if(p==buf || from[-1]=='\n')
+				write(ofd, " ", 1);	/* escape with space if From is at start of line */
+			write(ofd, from, 4);
+			m += 4;
+		}
+		n -= m;
+	}
+}
+
+void
+mesgsend(Message *m)
+{
+	char *s, *body, *to;
+	int i, j, h, n, natt, p[2];
+	struct Exec *e;
+	Channel *sync;
+	int first, nfld, delit, ofd;
+	char *copy, *fld[100], *now;
+
+	body = winreadbody(m->w, &n);
+	/* assemble to: list from first line, to: line, and cc: line */
+	nto = 0;
+	natt = 0;
+	ncc = 0;
+	nbcc = 0;
+	first = 1;
+	to = body;
+	for(;;){
+		for(s=to; *s!='\n'; s++)
+			if(*s == '\0'){
+				free(body);
+				return;
+			}
+		if(s++ == to)	/* blank line */
+			break;
+		/* make copy of line to tokenize */
+		copy = emalloc(s-to);
+		memmove(copy, to, s-to);
+		copy[s-to-1] = '\0';
+		nfld = tokenizec(copy, fld, nelem(fld), ", \t");
+		if(nfld == 0){
+			free(copy);
+			break;
+		}
+		n -= s-to;
+		switch(h = whichheader(fld[0])){
+		case TO:
+		case FROM:
+			delit = 1;
+			commas(to+strlen(fld[0]), s-1);
+			for(i=1; i<nfld && nto<nelem(tolist); i++)
+				if(!addressed(fld[i]))
+					tolist[nto++] = estrdup(fld[i]);
+			break;
+		case BCC:
+			delit = 1;
+			commas(to+strlen(fld[0]), s-1);
+			for(i=1; i<nfld && nbcc<nelem(bcclist); i++)
+				if(!addressed(fld[i]))
+					bcclist[nbcc++] = estrdup(fld[i]);
+			break;
+		case CC:
+			delit = 1;
+			commas(to+strlen(fld[0]), s-1);
+			for(i=1; i<nfld && ncc<nelem(cclist); i++)
+				if(!addressed(fld[i]))
+					cclist[ncc++] = estrdup(fld[i]);
+			break;
+		case ATTACH:
+		case INCLUDE:
+			delit = 1;
+			for(i=1; i<nfld && natt<nelem(attlist); i++){
+				attlist[natt] = estrdup(fld[i]);
+				included[natt++] = (h == INCLUDE);
+			}
+			break;
+		default:
+			if(first){
+				delit = 1;
+				for(i=0; i<nfld && nto<nelem(tolist); i++)
+					tolist[nto++] = estrdup(fld[i]);
+			}else	/* ignore it */
+				delit = 0;
+			break;
+		}
+		if(delit){
+			/* delete line from body */
+			memmove(to, s, n+1);
+		}else
+			to = s;
+		free(copy);
+		first = 0;
+	}
+
+	ofd = open(outgoing, OWRITE|OCEXEC);	/* no error check necessary */
+	if(ofd > 0){
+		/* From dhog Fri Aug 24 22:13:00 EDT 2001 */
+		now = ctime(time(0));
+		fprint(ofd, "From %s %s", user, now);
+		fprint(ofd, "From: %s\n", user);
+		fprint(ofd, "Date: %s", now);
+		for(i=0; i<natt; i++)
+			if(included[i])
+				fprint(ofd, "Include: %s\n", attlist[i]);
+			else
+				fprint(ofd, "Attach: %s\n", attlist[i]);
+		/* needed because mail is by default Latin-1 */
+		fprint(ofd, "Content-Type: text/plain; charset=\"UTF-8\"\n");
+		fprint(ofd, "Content-Transfer-Encoding: 8bit\n");
+	}
+
+	e = emalloc(sizeof(struct Exec));
+	if(pipe(p) < 0)
+		error("can't create pipe: %r");
+	e->p[0] = p[0];
+	e->p[1] = p[1];
+	e->prog = "/bin/upas/marshal";
+	e->argv = emalloc((1+1+2+4*natt+1)*sizeof(char*));
+	e->argv[0] = estrdup("marshal");
+	e->argv[1] = estrdup("-8");
+	j = 2;
+	if(m->replyname){
+		e->argv[j++] = estrdup("-R");
+		e->argv[j++] = estrstrdup(mbox.name, m->replyname);
+	}
+	for(i=0; i<natt; i++){
+		if(included[i])
+			e->argv[j++] = estrdup("-A");
+		else
+			e->argv[j++] = estrdup("-a");
+		e->argv[j++] = estrdup(attlist[i]);
+	}
+	sync = chancreate(sizeof(int), 0);
+	e->sync = sync;
+	proccreate(execproc, e, EXECSTACK);
+	recvul(sync);
+	close(p[0]);
+
+	/* using marshal -8, so generate rfc822 headers */
+	if(nto > 0){
+		print2(p[1], ofd, "To: ");
+		for(i=0; i<nto-1; i++)
+			print2(p[1], ofd, "%s, ", tolist[i]);
+		print2(p[1], ofd, "%s\n", tolist[i]);
+	}
+	if(ncc > 0){
+		print2(p[1], ofd, "CC: ");
+		for(i=0; i<ncc-1; i++)
+			print2(p[1], ofd, "%s, ", cclist[i]);
+		print2(p[1], ofd, "%s\n", cclist[i]);
+	}
+	if(nbcc > 0){
+		print2(p[1], ofd, "BCC: ");
+		for(i=0; i<nbcc-1; i++)
+			print2(p[1], ofd, "%s, ", bcclist[i]);
+		print2(p[1], ofd, "%s\n", bcclist[i]);
+	}
+
+	i = strlen(body);
+	if(i > 0)
+		write2(p[1], ofd, body, i, 1);
+
+	/* guarantee a blank line, to ensure attachments are separated from body */
+	if(i==0 || body[i-1]!='\n')
+		write2(p[1], ofd, "\n\n", 2, 0);
+	else if(i>1 && body[i-2]!='\n')
+		write2(p[1], ofd, "\n", 1, 0);
+
+	/* these look like pseudo-attachments in the "outgoing" box */
+	if(ofd>0 && natt>0){
+		for(i=0; i<natt; i++)
+			if(included[i])
+				fprint(ofd, "=====> Include: %s\n", attlist[i]);
+			else
+				fprint(ofd, "=====> Attach: %s\n", attlist[i]);
+	}
+	if(ofd > 0)
+		write(ofd, "\n", 1);
+
+	for(i=0; i<natt; i++)
+		free(attlist[i]);
+	close(ofd);
+	close(p[1]);
+	free(body);
+
+	if(m->replyname != nil)
+		mesgmenumark(mbox.w, m->replyname, "\t[replied]");
+	if(m->name[0] == '/')
+		s = estrdup(m->name);
+	else
+		s = estrstrdup(mbox.name, m->name);
+	s = egrow(s, "-R", nil);
+	winname(m->w, s);
+	free(s);
+	winclean(m->w);
+	/* mark message unopened because it's no longer the original message */
+	m->opened = 0;
+}
-- 
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