* https://www.openssl.org/source/license.html
*/
+#include "e_os.h"
#include <string.h>
#include <sys/stat.h>
#include <assert.h>
#include <openssl/ui.h>
#include <openssl/x509.h> /* For the PKCS8 stuff o.O */
#include "internal/asn1_int.h"
+#include "internal/ctype.h"
#include "internal/o_dir.h"
#include "internal/cryptlib.h"
#include "internal/store_int.h"
#include "store_locl.h"
-#include "e_os.h"
+#ifdef _WIN32
+# define stat _stat
+#endif
-/*
+/*-
* Password prompting
+ * ------------------
*/
static char *file_get_pass(const UI_METHOD *ui_method, char *pass,
void *data;
const char *prompt_info;
};
+
static int file_fill_pem_pass_data(struct pem_pass_data *pass_data,
const char *prompt_info,
const UI_METHOD *ui_method, void *ui_data)
pass_data->prompt_info = prompt_info;
return 1;
}
+
+/* This is used anywhere a pem_password_cb is needed */
static int file_get_pem_pass(char *buf, int num, int w, void *data)
{
struct pem_pass_data *pass_data = data;
return pass == NULL ? 0 : strlen(pass);
}
-/*
- * The file scheme handlers
+/*-
+ * The file scheme decoders
+ * ------------------------
+ *
+ * Each possible data type has its own decoder, which either operates
+ * through a given PEM name, or attempts to decode to see if the blob
+ * it's given is decodable for its data type. The assumption is that
+ * only the correct data type will match the content.
*/
/*-
int repeatable;
} FILE_HANDLER;
+/*
+ * PKCS#12 decoder. It operates by decoding all of the blob content,
+ * extracting all the interesting data from it and storing them internally,
+ * then serving them one piece at a time.
+ */
static OSSL_STORE_INFO *try_decode_PKCS12(const char *pem_name,
const char *pem_header,
const unsigned char *blob,
return store_info;
}
+
static int eof_PKCS12(void *ctx_)
{
STACK_OF(OSSL_STORE_INFO) *ctx = ctx_;
return ctx == NULL || sk_OSSL_STORE_INFO_num(ctx) == 0;
}
+
static void destroy_ctx_PKCS12(void **pctx)
{
STACK_OF(OSSL_STORE_INFO) *ctx = *pctx;
sk_OSSL_STORE_INFO_pop_free(ctx, OSSL_STORE_INFO_free);
*pctx = NULL;
}
+
static FILE_HANDLER PKCS12_handler = {
"PKCS12",
try_decode_PKCS12,
1 /* repeatable */
};
+/*
+ * Encrypted PKCS#8 decoder. It operates by just decrypting the given blob
+ * into a new blob, which is returned as an EMBEDDED STORE_INFO. The whole
+ * decoding process will then start over with the new blob.
+ */
static OSSL_STORE_INFO *try_decode_PKCS8Encrypted(const char *pem_name,
const char *pem_header,
const unsigned char *blob,
BUF_MEM_free(mem);
return NULL;
}
+
static FILE_HANDLER PKCS8Encrypted_handler = {
"PKCS8Encrypted",
try_decode_PKCS8Encrypted
};
+/*
+ * Private key decoder. Decodes all sorts of private keys, both PKCS#8
+ * encoded ones and old style PEM ones (with the key type is encoded into
+ * the PEM name).
+ */
int pem_check_suffix(const char *pem_str, const char *suffix);
static OSSL_STORE_INFO *try_decode_PrivateKey(const char *pem_name,
const char *pem_header,
return store_info;
}
+
static FILE_HANDLER PrivateKey_handler = {
"PrivateKey",
try_decode_PrivateKey
};
+/*
+ * Public key decoder. Only supports SubjectPublicKeyInfo formated keys.
+ */
static OSSL_STORE_INFO *try_decode_PUBKEY(const char *pem_name,
const char *pem_header,
const unsigned char *blob,
return store_info;
}
+
static FILE_HANDLER PUBKEY_handler = {
"PUBKEY",
try_decode_PUBKEY
};
+/*
+ * Key parameter decoder.
+ */
static OSSL_STORE_INFO *try_decode_params(const char *pem_name,
const char *pem_header,
const unsigned char *blob,
*matchcount = 1;
}
- if ((pkey = EVP_PKEY_new()) == NULL) {
- OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PARAMS, ERR_R_EVP_LIB);
- return NULL;
- }
-
if (slen > 0) {
+ if ((pkey = EVP_PKEY_new()) == NULL) {
+ OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PARAMS, ERR_R_EVP_LIB);
+ return NULL;
+ }
+
+
if (EVP_PKEY_set_type_str(pkey, pem_name, slen)
&& (ameth = EVP_PKEY_get0_asn1(pkey)) != NULL
&& ameth->param_decode != NULL
ok = 1;
} else {
int i;
+ EVP_PKEY *tmp_pkey = NULL;
for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) {
const unsigned char *tmp_blob = blob;
+ if (tmp_pkey == NULL && (tmp_pkey = EVP_PKEY_new()) == NULL) {
+ OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PARAMS, ERR_R_EVP_LIB);
+ break;
+ }
+
ameth = EVP_PKEY_asn1_get0(i);
if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
continue;
- if (EVP_PKEY_set_type(pkey, ameth->pkey_id)
- && (ameth = EVP_PKEY_get0_asn1(pkey)) != NULL
+
+ if (EVP_PKEY_set_type(tmp_pkey, ameth->pkey_id)
+ && (ameth = EVP_PKEY_get0_asn1(tmp_pkey)) != NULL
&& ameth->param_decode != NULL
- && ameth->param_decode(pkey, &tmp_blob, len)) {
+ && ameth->param_decode(tmp_pkey, &tmp_blob, len)) {
+ if (pkey != NULL)
+ EVP_PKEY_free(tmp_pkey);
+ else
+ pkey = tmp_pkey;
+ tmp_pkey = NULL;
(*matchcount)++;
- ok = 1;
- break;
}
}
+
+ EVP_PKEY_free(tmp_pkey);
+ if (*matchcount == 1) {
+ ok = 1;
+ }
}
if (ok)
return store_info;
}
+
static FILE_HANDLER params_handler = {
"params",
try_decode_params
};
+/*
+ * X.509 certificate decoder.
+ */
static OSSL_STORE_INFO *try_decode_X509Certificate(const char *pem_name,
const char *pem_header,
const unsigned char *blob,
return store_info;
}
+
static FILE_HANDLER X509Certificate_handler = {
"X509Certificate",
try_decode_X509Certificate
};
+/*
+ * X.509 CRL decoder.
+ */
static OSSL_STORE_INFO *try_decode_X509CRL(const char *pem_name,
const char *pem_header,
const unsigned char *blob,
return store_info;
}
+
static FILE_HANDLER X509CRL_handler = {
"X509CRL",
try_decode_X509CRL
};
+/*
+ * To finish it all off, we collect all the handlers.
+ */
static const FILE_HANDLER *file_handlers[] = {
&PKCS12_handler,
&PKCS8Encrypted_handler,
};
-/*
+/*-
* The loader itself
+ * -----------------
*/
struct ossl_store_loader_ctx_st {
{
OSSL_STORE_LOADER_CTX *ctx = NULL;
struct stat st;
- const char *path = NULL;
+ struct {
+ const char *path;
+ unsigned int check_absolute:1;
+ } path_data[2];
+ size_t path_data_n = 0, i;
+ const char *path;
+
+ /*
+ * First step, just take the URI as is.
+ */
+ path_data[path_data_n].check_absolute = 0;
+ path_data[path_data_n++].path = uri;
+ /*
+ * Second step, if the URI appears to start with the 'file' scheme,
+ * extract the path and make that the second path to check.
+ * There's a special case if the URI also contains an authority, then
+ * the full URI shouldn't be used as a path anywhere.
+ */
if (strncasecmp(uri, "file:", 5) == 0) {
- if (strncmp(&uri[5], "//localhost/", 12) == 0) {
- path = &uri[16];
- } else if (strncmp(&uri[5], "///", 3) == 0) {
- path = &uri[7];
- } else if (strncmp(&uri[5], "//", 2) != 0) {
- path = &uri[5];
- } else {
- OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN,
- OSSL_STORE_R_URI_AUTHORITY_UNSUPPORED);
- return NULL;
+ const char *p = &uri[5];
+
+ if (strncmp(&uri[5], "//", 2) == 0) {
+ path_data_n--; /* Invalidate using the full URI */
+ if (strncasecmp(&uri[7], "localhost/", 10) == 0) {
+ p = &uri[16];
+ } else if (uri[7] == '/') {
+ p = &uri[7];
+ } else {
+ OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN,
+ OSSL_STORE_R_URI_AUTHORITY_UNSUPPORTED);
+ return NULL;
+ }
}
+ path_data[path_data_n].check_absolute = 1;
+#ifdef _WIN32
+ /* Windows file: URIs with a drive letter start with a / */
+ if (p[0] == '/' && p[2] == ':' && p[3] == '/') {
+ char c = ossl_tolower(p[1]);
+
+ if (c >= 'a' && c <= 'z') {
+ p++;
+ /* We know it's absolute, so no need to check */
+ path_data[path_data_n].check_absolute = 0;
+ }
+ }
+#endif
+ path_data[path_data_n++].path = p;
+ }
+
+
+ for (i = 0, path = NULL; path == NULL && i < path_data_n; i++) {
/*
* If the scheme "file" was an explicit part of the URI, the path must
* be absolute. So says RFC 8089
*/
- if (path[0] != '/') {
+ if (path_data[i].check_absolute && path_data[i].path[0] != '/') {
OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN,
OSSL_STORE_R_PATH_MUST_BE_ABSOLUTE);
+ ERR_add_error_data(1, path_data[i].path);
return NULL;
}
-#ifdef _WIN32
- /* Windows file: URIs with a drive letter start with a / */
- if (path[0] == '/' && path[2] == ':' && path[3] == '/')
- path++;
-#endif
- } else {
- path = uri;
+ if (stat(path_data[i].path, &st) < 0) {
+ SYSerr(SYS_F_STAT, errno);
+ ERR_add_error_data(1, path_data[i].path);
+ } else {
+ path = path_data[i].path;
+ }
}
-
-
- if (stat(path, &st) < 0) {
- SYSerr(SYS_F_STAT, errno);
- ERR_add_error_data(1, path);
+ if (path == NULL) {
return NULL;
}
+ /* Successfully found a working path, clear possible collected errors */
+ ERR_clear_error();
+
ctx = OPENSSL_zalloc(sizeof(*ctx));
if (ctx == NULL) {
OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN, ERR_R_MALLOC_FAILURE);
}
ctx->_.file.file = BIO_push(buff, ctx->_.file.file);
- if (BIO_buffer_peek(ctx->_.file.file, peekbuf, sizeof(peekbuf)-1) > 0) {
- peekbuf[sizeof(peekbuf)-1] = '\0';
+ if (BIO_buffer_peek(ctx->_.file.file, peekbuf, sizeof(peekbuf) - 1) > 0) {
+ peekbuf[sizeof(peekbuf) - 1] = '\0';
if (strstr(peekbuf, "-----BEGIN ") != NULL)
ctx->type = is_pem;
}
return result;
}
-static void pem_free_flag(void *pem_data, int secure)
+static void pem_free_flag(void *pem_data, int secure, size_t num)
{
if (secure)
- OPENSSL_secure_free(pem_data);
+ OPENSSL_secure_clear_free(pem_data, num);
else
OPENSSL_free(pem_data);
}
ctx->errcnt++;
endloop:
- pem_free_flag(pem_name, (ctx->flags & FILE_FLAG_SECMEM) != 0);
- pem_free_flag(pem_header, (ctx->flags & FILE_FLAG_SECMEM) != 0);
- pem_free_flag(data, (ctx->flags & FILE_FLAG_SECMEM) != 0);
+ pem_free_flag(pem_name, (ctx->flags & FILE_FLAG_SECMEM) != 0, 0);
+ pem_free_flag(pem_header, (ctx->flags & FILE_FLAG_SECMEM) != 0, 0);
+ pem_free_flag(data, (ctx->flags & FILE_FLAG_SECMEM) != 0, len);
} while (matchcount == 0 && !file_eof(ctx) && !file_error(ctx));
/* We bail out on ambiguity */
projects / thirdparty / openssl.git / blobdiff