static RSA * load_rsa_key(const char *privkey) { RSA *rsa = NULL; char *defprivkey; /* * If privkey not set, default to ~/.ssh/id_rsa. */ if (privkey == NULL) defprivkey = xbps_xasprintf("%s/.ssh/id_rsa", getenv("HOME")); else defprivkey = strdup(privkey); ERR_load_crypto_strings(); OpenSSL_add_all_algorithms(); OpenSSL_add_all_ciphers(); OpenSSL_add_all_digests(); if ((rsa = load_rsa_privkey(defprivkey)) == NULL) { fprintf(stderr, "%s: failed to read the RSA privkey\n", _XBPS_RINDEX); exit(EXIT_FAILURE); } return rsa; }
static RSA * load_rsa_key(const char *privkey) { RSA *rsa = NULL; char *defprivkey; /* * If privkey not set, default to ~/.ssh/id_rsa. */ if (privkey == NULL) defprivkey = xbps_xasprintf("%s/.ssh/id_rsa", getenv("HOME")); else defprivkey = strdup(privkey); if ((rsa = load_rsa_privkey(defprivkey)) == NULL) { fprintf(stderr, "%s: failed to read the RSA privkey\n", _XBPS_RINDEX); exit(EXIT_FAILURE); } free(defprivkey); defprivkey = NULL; return rsa; }
int sign_repo(struct xbps_handle *xhp, const char *repodir, const char *privkey, const char *signedby) { struct stat st; struct xbps_repo *repo; xbps_dictionary_t pkgd, meta = NULL; xbps_data_t data = NULL, rpubkey = NULL; xbps_object_iterator_t iter = NULL; xbps_object_t obj; RSA *rsa = NULL; unsigned char *sig; unsigned int siglen; uint16_t rpubkeysize, pubkeysize; const char *arch, *pkgver, *rsignedby = NULL; char *binpkg = NULL, *binpkg_sig = NULL, *buf = NULL, *defprivkey = NULL; int binpkg_fd, binpkg_sig_fd, rv = 0; bool flush = false; if (signedby == NULL) { fprintf(stderr, "--signedby unset! cannot sign repository\n"); return -1; } /* * Check that repository index exists and not empty, otherwise bail out. */ repo = xbps_repo_open(xhp, repodir, true); if (repo == NULL) { rv = errno; fprintf(stderr, "%s: cannot read repository data: %s\n", _XBPS_RINDEX, strerror(errno)); goto out; } if (xbps_dictionary_count(repo->idx) == 0) { fprintf(stderr, "%s: invalid repository, existing!\n", _XBPS_RINDEX); rv = EINVAL; goto out; } /* * If privkey not set, default to ~/.ssh/id_rsa. */ if (privkey == NULL) defprivkey = xbps_xasprintf("%s/.ssh/id_rsa", getenv("HOME")); else defprivkey = strdup(privkey); ERR_load_crypto_strings(); OpenSSL_add_all_algorithms(); OpenSSL_add_all_ciphers(); OpenSSL_add_all_digests(); if ((rsa = load_rsa_privkey(defprivkey)) == NULL) { fprintf(stderr, "%s: failed to read the RSA privkey\n", _XBPS_RINDEX); rv = EINVAL; goto out; } /* * Iterate over the idx dictionary and then sign all binary * packages in this repository. */ iter = xbps_dictionary_iterator(repo->idx); assert(iter); while ((obj = xbps_object_iterator_next(iter))) { pkgd = xbps_dictionary_get_keysym(repo->idx, obj); xbps_dictionary_get_cstring_nocopy(pkgd, "architecture", &arch); xbps_dictionary_get_cstring_nocopy(pkgd, "pkgver", &pkgver); binpkg = xbps_xasprintf("%s/%s.%s.xbps", repodir, pkgver, arch); binpkg_sig = xbps_xasprintf("%s.sig", binpkg); /* * Skip pkg if file signature exists */ if ((binpkg_sig_fd = access(binpkg_sig, R_OK)) == 0) { if (xhp->flags & XBPS_FLAG_VERBOSE) fprintf(stderr, "skipping %s, file signature found.\n", pkgver); free(binpkg); free(binpkg_sig); close(binpkg_sig_fd); continue; } /* * Generate pkg file signature. */ if ((binpkg_fd = open(binpkg, O_RDONLY)) == -1) { fprintf(stderr, "cannot read %s: %s\n", binpkg, strerror(errno)); free(binpkg); free(binpkg_sig); continue; } fstat(binpkg_fd, &st); buf = malloc(st.st_size); assert(buf); if (read(binpkg_fd, buf, st.st_size) != st.st_size) { fprintf(stderr, "failed to read %s: %s\n", binpkg, strerror(errno)); close(binpkg_fd); free(buf); free(binpkg); free(binpkg_sig); continue; } close(binpkg_fd); if (!rsa_sign_buf(rsa, buf, st.st_size, &sig, &siglen)) { fprintf(stderr, "failed to sign %s: %s\n", binpkg, strerror(errno)); free(buf); free(binpkg); free(binpkg_sig); continue; } free(buf); free(binpkg); /* * Write pkg file signature. */ binpkg_sig_fd = creat(binpkg_sig, 0644); if (binpkg_sig_fd == -1) { fprintf(stderr, "failed to create %s: %s\n", binpkg_sig, strerror(errno)); free(sig); free(binpkg_sig); continue; } if (write(binpkg_sig_fd, sig, siglen) != (ssize_t)siglen) { fprintf(stderr, "failed to write %s: %s\n", binpkg_sig, strerror(errno)); free(sig); free(binpkg_sig); close(binpkg_sig_fd); continue; } free(sig); free(binpkg_sig); close(binpkg_sig_fd); printf("signed successfully %s\n", pkgver); } xbps_object_iterator_release(iter); /* * Check if repository index-meta contains changes compared to its * current state. */ if ((buf = pubkey_from_privkey(rsa)) == NULL) { rv = EINVAL; goto out; } meta = xbps_dictionary_create(); data = xbps_data_create_data(buf, strlen(buf)); rpubkey = xbps_dictionary_get(repo->idxmeta, "public-key"); if (!xbps_data_equals(rpubkey, data)) flush = true; free(buf); pubkeysize = RSA_size(rsa) * 8; xbps_dictionary_get_uint16(repo->idxmeta, "public-key-size", &rpubkeysize); if (rpubkeysize != pubkeysize) flush = true; xbps_dictionary_get_cstring_nocopy(repo->idxmeta, "signature-by", &rsignedby); if (rsignedby == NULL || strcmp(rsignedby, signedby)) flush = true; if (!flush) goto out; xbps_dictionary_set(meta, "public-key", data); xbps_dictionary_set_uint16(meta, "public-key-size", pubkeysize); xbps_dictionary_set_cstring_nocopy(meta, "signature-by", signedby); xbps_dictionary_set_cstring_nocopy(meta, "signature-type", "rsa"); xbps_object_release(data); data = NULL; if (!repodata_flush(xhp, repodir, repo->idx, meta)) { fprintf(stderr, "failed to write repodata: %s\n", strerror(errno)); goto out; } printf("Signed repository (%u package%s)\n", xbps_dictionary_count(repo->idx), xbps_dictionary_count(repo->idx) == 1 ? "" : "s"); out: if (defprivkey) { free(defprivkey); } if (rsa) { RSA_free(rsa); rsa = NULL; } if (repo) { xbps_repo_close(repo); } return rv ? -1 : 0; }