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35 RCSID("$Id: ks_file.c 22465 2008-01-16 14:25:24Z lha $");
37 typedef enum { USE_PEM, USE_DER } outformat;
50 parse_certificate(hx509_context context, const char *fn,
51 struct hx509_collector *c,
52 const hx509_pem_header *headers,
53 const void *data, size_t len)
58 ret = hx509_cert_init_data(context, data, len, &cert);
62 ret = _hx509_collector_certs_add(context, c, cert);
63 hx509_cert_free(cert);
68 try_decrypt(hx509_context context,
69 struct hx509_collector *collector,
70 const AlgorithmIdentifier *alg,
78 heim_octet_string clear;
83 keylen = EVP_CIPHER_key_length(c);
87 hx509_clear_error_string(context);
91 ret = EVP_BytesToKey(c, EVP_md5(), ivdata,
92 password, passwordlen,
95 hx509_set_error_string(context, 0, HX509_CRYPTO_INTERNAL_ERROR,
96 "Failed to do string2key for private key");
97 return HX509_CRYPTO_INTERNAL_ERROR;
100 clear.data = malloc(len);
101 if (clear.data == NULL) {
102 hx509_set_error_string(context, 0, ENOMEM,
103 "Out of memory to decrypt for private key");
111 EVP_CIPHER_CTX_init(&ctx);
112 EVP_CipherInit_ex(&ctx, c, NULL, key, ivdata, 0);
113 EVP_Cipher(&ctx, clear.data, cipher, len);
114 EVP_CIPHER_CTX_cleanup(&ctx);
117 ret = _hx509_collector_private_key_add(context,
124 memset(clear.data, 0, clear.length);
127 memset(key, 0, keylen);
133 parse_rsa_private_key(hx509_context context, const char *fn,
134 struct hx509_collector *c,
135 const hx509_pem_header *headers,
136 const void *data, size_t len)
141 enc = hx509_pem_find_header(headers, "Proc-Type");
147 const EVP_CIPHER *cipher;
148 const struct _hx509_password *pw;
150 int i, decrypted = 0;
152 lock = _hx509_collector_get_lock(c);
154 hx509_set_error_string(context, 0, HX509_ALG_NOT_SUPP,
155 "Failed to get password for "
156 "password protected file %s", fn);
157 return HX509_ALG_NOT_SUPP;
160 if (strcmp(enc, "4,ENCRYPTED") != 0) {
161 hx509_set_error_string(context, 0, HX509_PARSING_KEY_FAILED,
162 "RSA key encrypted in unknown method %s "
165 hx509_clear_error_string(context);
166 return HX509_PARSING_KEY_FAILED;
169 dek = hx509_pem_find_header(headers, "DEK-Info");
171 hx509_set_error_string(context, 0, HX509_PARSING_KEY_FAILED,
172 "Encrypted RSA missing DEK-Info");
173 return HX509_PARSING_KEY_FAILED;
178 hx509_clear_error_string(context);
182 iv = strchr(type, ',');
185 hx509_set_error_string(context, 0, HX509_PARSING_KEY_FAILED,
187 return HX509_PARSING_KEY_FAILED;
193 ivdata = malloc(size);
194 if (ivdata == NULL) {
195 hx509_clear_error_string(context);
200 cipher = EVP_get_cipherbyname(type);
201 if (cipher == NULL) {
203 hx509_set_error_string(context, 0, HX509_ALG_NOT_SUPP,
204 "RSA key encrypted with "
205 "unsupported cipher: %s",
208 return HX509_ALG_NOT_SUPP;
211 #define PKCS5_SALT_LEN 8
213 ssize = hex_decode(iv, ivdata, size);
218 if (ssize < 0 || ssize < PKCS5_SALT_LEN || ssize < EVP_CIPHER_iv_length(cipher)) {
220 hx509_set_error_string(context, 0, HX509_PARSING_KEY_FAILED,
221 "Salt have wrong length in RSA key file");
222 return HX509_PARSING_KEY_FAILED;
225 pw = _hx509_lock_get_passwords(lock);
227 const void *password;
230 for (i = 0; i < pw->len; i++) {
231 password = pw->val[i];
232 passwordlen = strlen(password);
234 ret = try_decrypt(context, c, hx509_signature_rsa(),
235 cipher, ivdata, password, passwordlen,
247 memset(&prompt, 0, sizeof(prompt));
249 prompt.prompt = "Password for keyfile: ";
250 prompt.type = HX509_PROMPT_TYPE_PASSWORD;
251 prompt.reply.data = password;
252 prompt.reply.length = sizeof(password);
254 ret = hx509_lock_prompt(lock, &prompt);
256 ret = try_decrypt(context, c, hx509_signature_rsa(),
257 cipher, ivdata, password, strlen(password),
259 /* XXX add password to lock password collection ? */
260 memset(password, 0, sizeof(password));
265 heim_octet_string keydata;
267 keydata.data = rk_UNCONST(data);
268 keydata.length = len;
270 ret = _hx509_collector_private_key_add(context,
272 hx509_signature_rsa(),
284 int (*func)(hx509_context, const char *, struct hx509_collector *,
285 const hx509_pem_header *, const void *, size_t);
287 { "CERTIFICATE", parse_certificate },
288 { "RSA PRIVATE KEY", parse_rsa_private_key }
294 struct hx509_collector *c;
298 pem_func(hx509_context context, const char *type,
299 const hx509_pem_header *header,
300 const void *data, size_t len, void *ctx)
302 struct pem_ctx *pem_ctx = (struct pem_ctx*)ctx;
305 for (j = 0; j < sizeof(formats)/sizeof(formats[0]); j++) {
306 const char *q = formats[j].name;
307 if (strcasecmp(type, q) == 0) {
308 ret = (*formats[j].func)(context, NULL, pem_ctx->c, header, data, len);
313 if (j == sizeof(formats)/sizeof(formats[0])) {
314 ret = HX509_UNSUPPORTED_OPERATION;
315 hx509_set_error_string(context, 0, ret,
316 "Found no matching PEM format for %s", type);
319 if (ret && (pem_ctx->flags & HX509_CERTS_UNPROTECT_ALL))
329 file_init_common(hx509_context context,
330 hx509_certs certs, void **data, int flags,
331 const char *residue, hx509_lock lock, outformat format)
334 struct ks_file *f = NULL;
335 hx509_private_key *keys = NULL;
337 struct pem_ctx pem_ctx;
339 pem_ctx.flags = flags;
345 lock = _hx509_empty_lock;
347 f = calloc(1, sizeof(*f));
349 hx509_clear_error_string(context);
354 f->fn = strdup(residue);
356 hx509_clear_error_string(context);
362 * XXX this is broken, the function should parse the file before
366 if (flags & HX509_CERTS_CREATE) {
367 ret = hx509_certs_init(context, "MEMORY:ks-file-create",
375 ret = _hx509_collector_alloc(context, lock, &pem_ctx.c);
379 for (p = f->fn; p != NULL; p = pnext) {
382 pnext = strchr(p, ',');
387 if ((f = fopen(p, "r")) == NULL) {
389 hx509_set_error_string(context, 0, ret,
390 "Failed to open PEM file \"%s\": %s",
395 ret = hx509_pem_read(context, f, pem_func, &pem_ctx);
397 if (ret != 0 && ret != HX509_PARSING_KEY_FAILED)
399 else if (ret == HX509_PARSING_KEY_FAILED) {
404 ret = _hx509_map_file(p, &ptr, &length, NULL);
406 hx509_clear_error_string(context);
410 for (i = 0; i < sizeof(formats)/sizeof(formats[0]); i++) {
411 ret = (*formats[i].func)(context, p, pem_ctx.c, NULL, ptr, length);
415 _hx509_unmap_file(ptr, length);
421 ret = _hx509_collector_collect_certs(context, pem_ctx.c, &f->certs);
425 ret = _hx509_collector_collect_private_keys(context, pem_ctx.c, &keys);
429 for (i = 0; keys[i]; i++)
430 _hx509_certs_keys_add(context, f->certs, keys[i]);
431 _hx509_certs_keys_free(context, keys);
443 _hx509_collector_free(pem_ctx.c);
449 file_init_pem(hx509_context context,
450 hx509_certs certs, void **data, int flags,
451 const char *residue, hx509_lock lock)
453 return file_init_common(context, certs, data, flags, residue, lock, USE_PEM);
457 file_init_der(hx509_context context,
458 hx509_certs certs, void **data, int flags,
459 const char *residue, hx509_lock lock)
461 return file_init_common(context, certs, data, flags, residue, lock, USE_DER);
465 file_free(hx509_certs certs, void *data)
467 struct ks_file *f = data;
468 hx509_certs_free(&f->certs);
480 store_func(hx509_context context, void *ctx, hx509_cert c)
482 struct store_ctx *sc = ctx;
483 heim_octet_string data;
486 ret = hx509_cert_binary(context, c, &data);
490 switch (sc->format) {
492 fwrite(data.data, data.length, 1, sc->f);
496 hx509_pem_write(context, "CERTIFICATE", NULL, sc->f,
497 data.data, data.length);
499 if (_hx509_cert_private_key_exportable(c)) {
500 hx509_private_key key = _hx509_cert_private_key(c);
501 ret = _hx509_private_key_export(context, key, &data);
504 hx509_pem_write(context, _hx509_private_pem_name(key), NULL, sc->f,
505 data.data, data.length);
515 file_store(hx509_context context,
516 hx509_certs certs, void *data, int flags, hx509_lock lock)
518 struct ks_file *f = data;
522 sc.f = fopen(f->fn, "w");
524 hx509_set_error_string(context, 0, ENOENT,
525 "Failed to open file %s for writing");
528 sc.format = f->format;
530 ret = hx509_certs_iter(context, f->certs, store_func, &sc);
536 file_add(hx509_context context, hx509_certs certs, void *data, hx509_cert c)
538 struct ks_file *f = data;
539 return hx509_certs_add(context, f->certs, c);
543 file_iter_start(hx509_context context,
544 hx509_certs certs, void *data, void **cursor)
546 struct ks_file *f = data;
547 return hx509_certs_start_seq(context, f->certs, cursor);
551 file_iter(hx509_context context,
552 hx509_certs certs, void *data, void *iter, hx509_cert *cert)
554 struct ks_file *f = data;
555 return hx509_certs_next_cert(context, f->certs, iter, cert);
559 file_iter_end(hx509_context context,
564 struct ks_file *f = data;
565 return hx509_certs_end_seq(context, f->certs, cursor);
569 file_getkeys(hx509_context context,
572 hx509_private_key **keys)
574 struct ks_file *f = data;
575 return _hx509_certs_keys_get(context, f->certs, keys);
579 file_addkey(hx509_context context,
582 hx509_private_key key)
584 struct ks_file *f = data;
585 return _hx509_certs_keys_add(context, f->certs, key);
588 static struct hx509_keyset_ops keyset_file = {
604 static struct hx509_keyset_ops keyset_pemfile = {
620 static struct hx509_keyset_ops keyset_derfile = {
638 _hx509_ks_file_register(hx509_context context)
640 _hx509_ks_register(context, &keyset_file);
641 _hx509_ks_register(context, &keyset_pemfile);
642 _hx509_ks_register(context, &keyset_derfile);