a

libsec/readcert.c

@@ -0,0 +1,50 @@
+#include <u.h>
+#include <libc.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)
+		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", filename);
+		return nil;
+	}
+	binary = decodepem(pem, "CERTIFICATE", pcertlen);
+	free(pem);
+	if(binary == nil){
+		werrstr("can't parse %s", filename);
+		return nil;
+	}
+	return binary;
+}
+