start implementing loading cert from filesystem, add validity times

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This work was sponsored by WIO (wiowireless.com)

diff --git a/ucert.c b/ucert.c
index ac044201875da5046c0b7b29941a00e8641ffe69..9afca1ced37fb9eebf285901189583343f0acf4a 100644 (file)
--- a/ucert.c
+++ b/ucert.c
@@ -28,10 +28,13 @@
 
 #include <json-c/json.h>
 #include <libubox/blob.h>
+#include <libubox/utils.h>
 #include <libubox/list.h>
 #include <libubox/vlist.h>
 #include <libubox/blobmsg_json.h>
 
+#define CERT_BUF_LEN 4096
+
 static enum {
        CMD_APPEND,
        CMD_DUMP,
@@ -57,12 +60,15 @@ static const struct blob_attr_info cert_policy[CERT_ATTR_MAX] = {
 enum cert_payload_attr {
        CERT_PL_ATTR_CERTTYPE,
        CERT_PL_ATTR_CERTID,
+       CERT_PL_ATTR_VALIDFROMTIME,
+       CERT_PL_ATTR_EXPIRETIME,
        CERT_PL_ATTR_PUBKEY,
        CERT_PL_ATTR_KEY_FINGERPRINT,
        CERT_PL_ATTR_MAX
 };
 
 enum certtype_id {
+       CERTTYPE_UNSPEC,
        CERTTYPE_AUTH,
        CERTTYPE_REVOKE
 };
@@ -70,18 +76,56 @@ enum certtype_id {
 static const struct blobmsg_policy cert_payload_policy[CERT_PL_ATTR_MAX] = {
        [CERT_PL_ATTR_CERTTYPE] = { .type = BLOBMSG_TYPE_INT8 },
        [CERT_PL_ATTR_CERTID] = { .type = BLOBMSG_TYPE_INT64 },
+       [CERT_PL_ATTR_VALIDFROMTIME] = { .type = BLOBMSG_TYPE_INT64 },
+       [CERT_PL_ATTR_EXPIRETIME] = { .type = BLOBMSG_TYPE_INT64 },
        [CERT_PL_ATTR_PUBKEY] = { .type = BLOBMSG_TYPE_STRING },
        [CERT_PL_ATTR_KEY_FINGERPRINT] = { .type = BLOBMSG_TYPE_STRING },
 };
 
+
+static int cert_load(const char *certfile, struct blob_attr *certtb[]) {
+       FILE *f;
+       struct blob_buf certbuf;
+       int ret = 0;
+       char filebuf[CERT_BUF_LEN];
+       int len;
+
+       blob_buf_init(&certbuf, 0);
+
+       f = fopen(certfile, "r");
+       if (!f)
+               return 1;
+
+       do {
+               len = fread(&filebuf, 1, CERT_BUF_LEN - 1, f);
+               blob_put_raw(&certbuf, filebuf, len);
+       } while(!feof(f) && !ferror(f));
+
+       ret = ferror(f);
+       fclose(f);
+
+       if (ret)
+               return 1;
+
+       blob_parse(certbuf.head, certtb, cert_policy, CERT_ATTR_MAX);
+
+       return 0;
+}
+
 static int cert_append(const char *certfile, const char *pubkeyfile, const char *sigfile) {
        fprintf(stderr, "not implemented\n");
        return 1;
 }
 
 static int cert_dump(const char *certfile) {
-       fprintf(stderr, "not implemented\n");
-       return 1;
+       struct blob_attr *certtb[CERT_ATTR_MAX];
+
+       if (cert_load(certfile, certtb)) {
+               fprintf(stderr, "cannot parse cert\n");
+               return 1;
+       }
+
+       return 0;
 }
 
 static int cert_issue(const char *certfile, const char *pubkeyfile, const char *seckeyfile) {