/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h>#include <auth.h>#include <mp.h>#include <libsec.h> static char*readfile(char *name){	int fd;	char *s;	Dir *d; 	fd = open(name, OREAD);	if(fd < 0)		return nil;	if((d = dirfstat(fd)) == nil) {		close(fd);		return nil;	}	s = malloc(d->length + 1);	if(s == nil || readn(fd, s, d->length) != d->length){		free(s);		free(d);		close(fd);		return nil;	}	close(fd);	s[d->length] = '\0';	free(d);	return s;} uchar*readcert(char *filename, int *pcertlen){	char *pem;	uchar *binary; 	pem = readfile(filename);	if(pem == nil){		werrstr("can't read %s: %r", filename);		return nil;	}	binary = decodePEM(pem, "CERTIFICATE", pcertlen, nil);	free(pem);	if(binary == nil){		werrstr("can't parse %s", filename);		return nil;	}	return binary;} PEMChain *readcertchain(char *filename){	char *chfile; 	chfile = readfile(filename);	if (chfile == nil) {		werrstr("can't read %s: %r", filename);		return nil;	}	return decodepemchain(chfile, "CERTIFICATE");}