C++ s_to_c函数代码示例

/*
 *  report a recipient to remote
 */
char *
rcptto(char *to)
{
	String *s;

	s = unescapespecial(bangtoat(to));
	if(toline == 0)
		toline = s_new();
	else
		s_append(toline, ", ");
	s_append(toline, s_to_c(s));
	if(strchr(s_to_c(s), '@'))
		dBprint("RCPT TO:<%s>\r\n", s_to_c(s));
	else {
		s_append(toline, "@");
		s_append(toline, ddomain);
		dBprint("RCPT TO:<%[email protected]%s>\r\n", s_to_c(s), ddomain);
	}
	alarm(10*alarmscale);
	switch(getreply()){
	case 2:
		break;
	case 5:
		return Giveup;
	default:
		return Retry;
	}
	return 0;
}

/* return 1 if name found in one of the files
 *	  0 if name not found in one of the files
 *	  -1 if neither file exists
 */
extern int
lookup(char *cp, char *local, Biobuf **lfpp, char *global, Biobuf **gfpp)
{
	static String *file = 0;

	if (local) {
		if (file == 0)
			file = s_new();
		abspath(local, UPASLIB, s_restart(file));
		if (*lfpp != 0 || (*lfpp = sysopen(s_to_c(file), "r", 0)) != 0) {
			if (okfile(cp, *lfpp))
				return 1;
		} else
			local = 0;
	}
	if (global) {
		abspath(global, UPASLIB, s_restart(file));
		if (*gfpp != 0 || (*gfpp = sysopen(s_to_c(file), "r", 0)) != 0) {
			if (okfile(cp, *gfpp))
				return 1;
		} else
			global = 0;
	}
	return (local || global)? 0 : -1;
}

void
info(int indent, int mno, Message *m)
{
	int i;
	Message *nm;

	prindent(indent);
	print("%d%c %d ", mno, m->allocated?'*':' ', m->end - m->start);
	if(m->unixfrom != nil)
		print("uf %s ", s_to_c(m->unixfrom));
	if(m->unixdate != nil)
		print("ud %s ", s_to_c(m->unixdate));
	print("\n");
	prstring(indent, "from:", m->from822);
	prstring(indent, "sender:", m->sender822);
	prstring(indent, "to:", m->to822);
	prstring(indent, "cc:", m->cc822);
	prstring(indent, "reply-to:", m->replyto822);
	prstring(indent, "subject:", m->subject822);
	prstring(indent, "date:", m->date822);
	prstring(indent, "filename:", m->filename);
	prstring(indent, "type:", m->type);
	prstring(indent, "charset:", m->charset);

	i = 1;
	for(nm = m->part; nm != nil; nm = nm->next){
		info(indent+1, i++, nm);
	}
}

/*
 *  print out the parsed header
 */
int
printheader(void)
{
	int n, len;
	Field *f;
	Node *p;
	char *cp;
	char c[1];

	n = 0;
	for(f = firstfield; f; f = f->next){
		for(p = f->node; p; p = p->next){
			if(p->s)
				n += dBprint("%s", s_to_c(p->s));
			else {
				c[0] = p->c;
				putcrnl(c, 1);
				n++;
			}
			if(p->white){
				cp = s_to_c(p->white);
				len = strlen(cp);
				putcrnl(cp, len);
				n += len;
			}
			uneaten = p->end;
		}
		putcrnl("\n", 1);
		n++;
		uneaten++;		/* skip newline */
	}
	return n;
}

/*
 *  check lower case version of address agains patterns
 */
static Pattern*
checkaddr(char *arg)
{
	Pattern *p;
	Reprog *rp;
	String *s;

	s = s_copy(arg);
	mklower(s_to_c(s));

	for(p = patterns; p != nil; p = p->next)
		switch(p->type){
		case Texact:
			if(strcmp(p->arg, s_to_c(s)) == 0){
				free(s);
				return p;
			}
			break;
		case Tregexp:
			rp = regcomp(p->arg);
			if(rp == nil)
				continue;
			if(regexec(rp, s_to_c(s), nil, 0)){
				free(rp);
				free(s);
				return p;
			}
			free(rp);
			break;
		}
	s_free(s);
	return 0;
}

/*  Transforms the address into a command.
 *  Returns:	-1 ifaddress not matched by reules
 *		 0 ifaddress matched and ok to forward
 *		 1 ifaddress matched and not ok to forward
 */
extern int
rewrite(dest *dp, message *mp)
{
	rule *rp;		/* rewriting rule */
	String *lower;		/* lower case version of destination */

	/*
	 *  Rewrite the address.  Matching is case insensitive.
	 */
	lower = s_clone(dp->addr);
	s_tolower(s_restart(lower));
	rp = findrule(lower, dp->authorized);
	if(rp == 0){
		s_free(lower);
		return -1;
	}
	strcpy(s_to_c(lower), s_to_c(dp->addr));
	dp->repl1 = substitute(rp->repl1, rp->subexp, mp);
	dp->repl2 = substitute(rp->repl2, rp->subexp, mp);
	dp->status = rp->type;
	if(debug){
		fprint(2, "\t->");
		if(dp->repl1)
			fprint(2, "%s", s_to_c(dp->repl1));
		if(dp->repl2)
			fprint(2, "%s", s_to_c(dp->repl2));
		fprint(2, "\n");
	}
	s_free(lower);
	return 0;
}

/*
 *  Get the next token from `line'.  The symbol `\l' is replaced by
 *  the name of the local system.
 */
extern String *
rule_parse(String *line, char *system, int *backl)
{
	String *token;
	String *expanded;
	char *cp;

	token = s_parse(line, 0);
	if(token == 0)
		return(token);
	if(strchr(s_to_c(token), '\\')==0)
		return(token);
	expanded = s_new();
	for(cp = s_to_c(token); *cp; cp++) {
		if(*cp == '\\') switch(*++cp) {
		case 'l':
			s_append(expanded, system);
			*backl = 1;
			break;
		case '\\':
			s_putc(expanded, '\\');
			break;
		default:
			s_putc(expanded, '\\');
			s_putc(expanded, *cp);
			break;
		} else
			s_putc(expanded, *cp);
	}
	s_free(token);
	s_terminate(expanded);
	return(expanded);
}

/* look up a matching rule */
static rule *
findrule(String *addrp, int authorized)
{
	rule *rp;
	static rule defaultrule;

	if(rulep == 0)
		return &defaultrule;
	for (rp = rulep; rp != 0; rp = rp->next) {
		if(rp->type==d_auth && authorized)
			continue;
		if(rp->program == 0)
			rp->program = regcomp(rp->matchre->base);
		if(rp->program == 0)
			continue;
		memset(rp->subexp, 0, sizeof(rp->subexp));
		if(debug)
			fprint(2, "matching %s aginst %s\n", s_to_c(addrp), rp->matchre->base);
		if(regexec(rp->program, s_to_c(addrp), rp->subexp, NSUBEXP))
		if(s_to_c(addrp) == rp->subexp[0].s.sp)
		if((s_to_c(addrp) + strlen(s_to_c(addrp))) == rp->subexp[0].e.ep)
			return rp;
	}
	return 0;
}

/*
 *  print out a header line, expanding any domainless addresses into
 *  [email protected]
 */
char*
bprintnode(Biobuf *b, Node *p, int *cntp)
{
	int len;

	*cntp = 0;
	if(p->s){
		if(p->addr && strchr(s_to_c(p->s), '@') == nil){
			if(Bprint(b, "%[email protected]%s", s_to_c(p->s), him) < 0)
				return nil;
			*cntp += s_len(p->s) + 1 + strlen(him);
		} else {
			len = s_len(p->s);
			if(Bwrite(b, s_to_c(p->s), len) < 0)
				return nil;
			*cntp += len;
		}
	}else{
		if(Bputc(b, p->c) < 0)
			return nil;
		++*cntp;
	}
	if(p->white) {
		len = s_len(p->white);
		if(Bwrite(b, s_to_c(p->white), len) < 0)
			return nil;
		*cntp += len;
	}
	return p->end+1;
}

static int
catchalarm(void *a, char *msg)
{
	int rv;

	USED(a);

	/* log alarms but continue */
	if(strstr(msg, "alarm") != nil){
		if(senders.first && senders.first->p &&
		    rcvers.first && rcvers.first->p)
			syslog(0, "smtpd", "note: %s->%s: %s",
				s_to_c(senders.first->p),
				s_to_c(rcvers.first->p), msg);
		else
			syslog(0, "smtpd", "note: %s", msg);
		rv = Atnoterecog;
	} else
		rv = Atnoteunknown;
	if (debug) {
		seek(2, 0, 2);
		fprint(2, "caught note: %s\n", msg);
	}

	/* kill the children if there are any */
	if(pp && pp->pid > 0) {
		syskillpg(pp->pid);
		/* none can't syskillpg, so try a variant */
		sleep(500);
		syskill(pp->pid);
	}

	return rv;
}

/*
 *  print out a parsed date
 */
int
printdate(Node *p)
{
	int n, sep = 0;

	n = dBprint("Date: %s,", s_to_c(p->s));
	for(p = p->next; p; p = p->next){
		if(p->s){
			if(sep == 0) {
				dBputc(' ');
				n++;
			}
			if (p->next)
				n += dBprint("%s", s_to_c(p->s));
			else
				n += dBprint("%s", rewritezone(s_to_c(p->s)));
			sep = 0;
		} else {
			dBputc(p->c);
			n++;
			sep = 1;
		}
	}
	n += dBprint("\r\n");
	return n;
}

/* send message filtering Reply-to out of messages */
void
printmsg(int fd, String *msg, char *replyto, char *listname)
{
	Field *f, *subject;
	Node *p;
	char *cp, *ocp;

	subject = nil;
	cp = s_to_c(msg);
	for(f = firstfield; f; f = f->next){
		ocp = cp;
		for(p = f->node; p; p = p->next)
			cp = p->end+1;
		if(f->node->c == REPLY_TO)
			continue;
		if(f->node->c == PRECEDENCE)
			continue;
		if(f->node->c == SUBJECT){
			subject = f;
			continue;
		}
		write(fd, ocp, cp-ocp);
	}
	printsubject(fd, subject, listname);
	fprint(fd, "Reply-To: %s\nPrecedence: bulk\n", replyto);
	write(fd, cp, s_len(msg) - (cp - s_to_c(msg)));
}

/*
 *  walk up the tree building a MVS style path
 */
static void
mvspath(Node *node, String *path)
{
	if(node == node->parent){
		s_append(path, s_to_c(remrootpath));
		return;
	}
	mvspath(node->parent, path);
	if(s_len(path) > 0)
		s_append(path, ".");
	s_append(path, s_to_c(node->remname));
}

/*
 *  walk up the tree building a Unix style path
 */
static void
unixpath(Node *node, String *path)
{
	if(node == node->parent){
		s_append(path, s_to_c(remrootpath));
		return;
	}
	unixpath(node->parent, path);
	if(s_len(path) > 0 && strcmp(s_to_c(path), "/") != 0)
		s_append(path, "/");
	s_append(path, s_to_c(node->remname));
}

int
matcher(char *action, Pattern *p, char *message, Resub *m)
{
    char *cp;
    String *s;

    for(cp = message; matchpat(p, cp, m); cp = m->ep) {
        switch(p->action) {
        case SaveLine:
            if(vflag)
                xprint(2, action, m);
            saveline(linefile, sender, m);
            break;
        case HoldHeader:
        case Hold:
            if(nflag)
                continue;
            if(vflag)
                xprint(2, action, m);
            *qdir = holdqueue;
            if(hflag && qname) {
                cp = strchr(sender, '!');
                if(cp) {
                    *cp = 0;
                    *qname = strdup(sender);
                    *cp = '!';
                } else
                    *qname = strdup(sender);
            }
            return 1;
        case Dump:
            if(vflag)
                xprint(2, action, m);
            *(m->ep) = 0;
            if(!tflag) {
                s = s_new();
                s_append(s, sender);
                s = unescapespecial(s);
                syslog(0, "smtpd", "Dumped %s [%s] to %s", s_to_c(s), m->sp,
                       s_to_c(s_restart(recips)));
                s_free(s);
            }
            tflag = 1;
            if(sflag)
                cout = opendump(sender);
            return 1;
        default:
            break;
        }
    }
    return 0;
}