#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>
+#include "usign.h"
+
+#define CERT_BUF_LEN 4096
+
static enum {
CMD_APPEND,
CMD_DUMP,
static bool quiet;
+enum cert_attr {
+ CERT_ATTR_SIGNATURE,
+ CERT_ATTR_PAYLOAD,
+ CERT_ATTR_MAX
+};
+
+static const struct blob_attr_info cert_policy[CERT_ATTR_MAX] = {
+ [CERT_ATTR_SIGNATURE] = { .type = BLOB_ATTR_BINARY },
+ [CERT_ATTR_PAYLOAD] = { .type = BLOB_ATTR_NESTED },
+};
+
+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
+};
+
+static const struct blobmsg_policy cert_payload_policy[CERT_PL_ATTR_MAX] = {
+ [CERT_PL_ATTR_CERTTYPE] = { .name = "certtype", .type = BLOBMSG_TYPE_INT32 },
+ [CERT_PL_ATTR_CERTID] = { .name = "certid", .type = BLOBMSG_TYPE_INT32 },
+ [CERT_PL_ATTR_VALIDFROMTIME] = { .name = "validfrom", .type = BLOBMSG_TYPE_INT64 },
+ [CERT_PL_ATTR_EXPIRETIME] = { .name = "expiresat", .type = BLOBMSG_TYPE_INT64 },
+ [CERT_PL_ATTR_PUBKEY] = { .name = "pubkey", .type = BLOBMSG_TYPE_STRING },
+ [CERT_PL_ATTR_KEY_FINGERPRINT] = { .name = "fingerprint", .type = BLOBMSG_TYPE_STRING },
+};
+
+struct cert_object {
+ struct list_head list;
+ struct blob_attr **cert;
+};
+
+static int write_file(const char *filename, void *buf, size_t len, bool append) {
+ FILE *f;
+ size_t outlen;
+
+ f = fopen(filename, append?"a":"w");
+ if (!f)
+ return 1;
+
+ outlen = fwrite(buf, 1, len, f);
+ fclose(f);
+ return (outlen == len);
+}
+
+static int cert_load(const char *certfile, struct list_head *chain) {
+ FILE *f;
+ struct blob_attr *certtb[CERT_ATTR_MAX];
+ struct cert_object *cobj;
+ char filebuf[CERT_BUF_LEN];
+ int ret = 0;
+ int len;
+
+ f = fopen(certfile, "r");
+ if (!f)
+ return 1;
+
+ len = fread(&filebuf, 1, CERT_BUF_LEN - 1, f);
+ ret = ferror(f) || !feof(f);
+ fclose(f);
+ if (ret)
+ return 1;
+ ret = blob_parse(filebuf, certtb, cert_policy, CERT_ATTR_MAX);
+ cobj = calloc(1, sizeof(*cobj));
+ cobj->cert = &certtb;
+ list_add_tail(&cobj->list, chain);
+
+ fprintf(stderr, "blob_parse return %d\n", ret);
+ return (ret <= 0);
+}
+
static int cert_append(const char *certfile, const char *pubkeyfile, const char *sigfile) {
fprintf(stderr, "not implemented\n");
return 1;
}
+static void cert_dump_blob(struct blob_attr *cert[CERT_ATTR_MAX]) {
+ int i;
+
+ for (i = 0; i < CERT_ATTR_MAX; i++) {
+ struct blob_attr *v = cert[i];
+
+ if (!v)
+ continue;
+
+ switch(cert_policy[i].type) {
+ case BLOB_ATTR_BINARY:
+ fprintf(stdout, "signature: %s\n", blob_data(v));
+ break;
+ case BLOB_ATTR_NESTED:
+ fprintf(stdout, "payload:\n%s\n", blobmsg_format_json(blob_data(v), false));
+ break;
+ }
+ }
+}
+
static int cert_dump(const char *certfile) {
- fprintf(stderr, "not implemented\n");
- return 1;
+ struct cert_object *cobj;
+ static LIST_HEAD(certchain);
+
+ if (cert_load(certfile, &certchain)) {
+ fprintf(stderr, "cannot parse cert\n");
+ return 1;
+ }
+
+ list_for_each_entry(cobj, &certchain, list)
+ cert_dump_blob(cobj->cert);
+
+ return 0;
}
static int cert_issue(const char *certfile, const char *pubkeyfile, const char *seckeyfile) {
- fprintf(stderr, "not implemented\n");
- return 1;
+ struct blob_buf certbuf;
+ struct blob_buf payloadbuf;
+ struct timeval tv;
+ struct stat st;
+ int pklen, siglen;
+ int revoker = 1;
+ void *c;
+
+ FILE *pkf, *sigf;
+ char pkb[512];
+ char sigb[512];
+ char fname[256], sfname[256];
+ char pkfp[17];
+ char tmpdir[] = "/tmp/ucert-XXXXXX";
+
+ if (stat(certfile, &st) == 0) {
+ fprintf(stderr, "certfile %s exists, won't overwrite.\n", certfile);
+ return -1;
+ }
+
+ pkf = fopen(pubkeyfile, "r");
+ if (!pkf)
+ return -1;
+
+ pklen = fread(pkb, 1, 512, pkf);
+ pkb[pklen - 1] = '\0';
+
+ if (pklen < 32)
+ return -1;
+
+ fclose(pkf);
+
+ if (usign_f_pubkey(pkfp, pubkeyfile))
+ return -1;
+
+ gettimeofday(&tv, NULL);
+
+ if (mkdtemp(tmpdir) == NULL)
+ return errno;
+
+ while (revoker >= 0) {
+ blob_buf_init(&payloadbuf, 0);
+ c = blobmsg_open_table(&payloadbuf, "ucert");
+ blobmsg_add_u32(&payloadbuf, "certtype", revoker?CERTTYPE_REVOKE:CERTTYPE_AUTH);
+ blobmsg_add_u64(&payloadbuf, "validfrom", tv.tv_sec);
+ if (!revoker) {
+ blobmsg_add_u64(&payloadbuf, "expiresat", tv.tv_sec + 60 * 60 * 24 * 365);
+ blobmsg_add_string(&payloadbuf, "pubkey", pkb);
+ } else {
+ blobmsg_add_string(&payloadbuf, "fingerprint", pkfp);
+ }
+
+ blobmsg_close_table(&payloadbuf, c);
+
+ snprintf(fname, sizeof(fname) - 1, "%s/%s", tmpdir, revoker?"revoker":"payload");
+ write_file(fname, blob_data(payloadbuf.head), blob_len(payloadbuf.head), false);
+
+ snprintf(sfname, sizeof(sfname) - 1, "%s/%s", tmpdir, revoker?"revoker.sig":"payload.sig");
+ if (usign_s(fname, seckeyfile, sfname, quiet))
+ return 1;
+
+ sigf = fopen(sfname, "r");
+ if (!sigf)
+ return 1;
+
+ siglen = fread(sigb, 1, 1024, sigf);
+ if (siglen < 1)
+ return 1;
+
+ sigb[siglen-1] = '\0';
+ fclose(sigf);
+
+ unlink(fname);
+ unlink(sfname);
+
+ blob_buf_init(&certbuf, 0);
+ blob_put(&certbuf, CERT_ATTR_SIGNATURE, sigb, siglen);
+ blob_put(&certbuf, CERT_ATTR_PAYLOAD, blob_data(payloadbuf.head), blob_len(payloadbuf.head));
+ snprintf(fname, sizeof(fname) - 1, "%s%s", certfile, revoker?".revoke":"");
+ write_file(fname, certbuf.head, blob_raw_len(certbuf.head), false);
+ revoker--;
+ }
+
+ rmdir(tmpdir);
+
+ return 0;
}
static int cert_process_revoker(const char *certfile) {
projects / oweals / ucert.git / blobdiff