1477 lines
46 KiB
C
1477 lines
46 KiB
C
/*
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* Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include "e_os.h"
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#include <string.h>
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#include <sys/stat.h>
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#include <ctype.h>
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#include <assert.h>
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#include <openssl/bio.h>
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#include <openssl/dsa.h> /* For d2i_DSAPrivateKey */
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/pem.h>
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#include <openssl/pkcs12.h> /* For the PKCS8 stuff o.O */
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#include <openssl/rsa.h> /* For d2i_RSAPrivateKey */
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#include <openssl/safestack.h>
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#include <openssl/store.h>
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#include <openssl/ui.h>
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#include <openssl/x509.h> /* For the PKCS8 stuff o.O */
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#include "crypto/asn1.h"
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#include "crypto/ctype.h"
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#include "internal/o_dir.h"
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#include "internal/cryptlib.h"
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#include "crypto/store.h"
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#include "store_local.h"
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#ifdef _WIN32
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# define stat _stat
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#endif
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#ifndef S_ISDIR
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# define S_ISDIR(a) (((a) & S_IFMT) == S_IFDIR)
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#endif
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/*-
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* Password prompting
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* ------------------
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*/
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static char *file_get_pass(const UI_METHOD *ui_method, char *pass,
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size_t maxsize, const char *prompt_info, void *data)
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{
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UI *ui = UI_new();
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char *prompt = NULL;
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if (ui == NULL) {
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OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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if (ui_method != NULL)
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UI_set_method(ui, ui_method);
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UI_add_user_data(ui, data);
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if ((prompt = UI_construct_prompt(ui, "pass phrase",
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prompt_info)) == NULL) {
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OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_MALLOC_FAILURE);
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pass = NULL;
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} else if (!UI_add_input_string(ui, prompt, UI_INPUT_FLAG_DEFAULT_PWD,
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pass, 0, maxsize - 1)) {
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OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_UI_LIB);
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pass = NULL;
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} else {
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switch (UI_process(ui)) {
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case -2:
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OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS,
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OSSL_STORE_R_UI_PROCESS_INTERRUPTED_OR_CANCELLED);
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pass = NULL;
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break;
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case -1:
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OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_UI_LIB);
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pass = NULL;
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break;
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default:
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break;
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}
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}
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OPENSSL_free(prompt);
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UI_free(ui);
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return pass;
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}
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struct pem_pass_data {
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const UI_METHOD *ui_method;
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void *data;
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const char *prompt_info;
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};
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static int file_fill_pem_pass_data(struct pem_pass_data *pass_data,
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const char *prompt_info,
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const UI_METHOD *ui_method, void *ui_data)
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{
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if (pass_data == NULL)
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return 0;
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pass_data->ui_method = ui_method;
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pass_data->data = ui_data;
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pass_data->prompt_info = prompt_info;
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return 1;
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}
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/* This is used anywhere a pem_password_cb is needed */
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static int file_get_pem_pass(char *buf, int num, int w, void *data)
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{
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struct pem_pass_data *pass_data = data;
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char *pass = file_get_pass(pass_data->ui_method, buf, num,
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pass_data->prompt_info, pass_data->data);
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return pass == NULL ? 0 : strlen(pass);
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}
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/*-
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* The file scheme decoders
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* ------------------------
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*
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* Each possible data type has its own decoder, which either operates
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* through a given PEM name, or attempts to decode to see if the blob
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* it's given is decodable for its data type. The assumption is that
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* only the correct data type will match the content.
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*/
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/*-
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* The try_decode function is called to check if the blob of data can
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* be used by this handler, and if it can, decodes it into a supported
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* OpenSSL type and returns a OSSL_STORE_INFO with the decoded data.
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* Input:
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* pem_name: If this blob comes from a PEM file, this holds
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* the PEM name. If it comes from another type of
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* file, this is NULL.
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* pem_header: If this blob comes from a PEM file, this holds
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* the PEM headers. If it comes from another type of
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* file, this is NULL.
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* blob: The blob of data to match with what this handler
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* can use.
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* len: The length of the blob.
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* handler_ctx: For a handler marked repeatable, this pointer can
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* be used to create a context for the handler. IT IS
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* THE HANDLER'S RESPONSIBILITY TO CREATE AND DESTROY
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* THIS CONTEXT APPROPRIATELY, i.e. create on first call
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* and destroy when about to return NULL.
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* matchcount: A pointer to an int to count matches for this data.
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* Usually becomes 0 (no match) or 1 (match!), but may
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* be higher in the (unlikely) event that the data matches
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* more than one possibility. The int will always be
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* zero when the function is called.
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* ui_method: Application UI method for getting a password, pin
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* or any other interactive data.
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* ui_data: Application data to be passed to ui_method when
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* it's called.
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* Output:
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* a OSSL_STORE_INFO
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*/
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typedef OSSL_STORE_INFO *(*file_try_decode_fn)(const char *pem_name,
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const char *pem_header,
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const unsigned char *blob,
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size_t len, void **handler_ctx,
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int *matchcount,
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const UI_METHOD *ui_method,
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void *ui_data);
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/*
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* The eof function should return 1 if there's no more data to be found
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* with the handler_ctx, otherwise 0. This is only used when the handler is
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* marked repeatable.
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*/
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typedef int (*file_eof_fn)(void *handler_ctx);
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/*
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* The destroy_ctx function is used to destroy the handler_ctx that was
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* initiated by a repeatable try_decode function. This is only used when
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* the handler is marked repeatable.
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*/
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typedef void (*file_destroy_ctx_fn)(void **handler_ctx);
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typedef struct file_handler_st {
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const char *name;
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file_try_decode_fn try_decode;
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file_eof_fn eof;
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file_destroy_ctx_fn destroy_ctx;
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/* flags */
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int repeatable;
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} FILE_HANDLER;
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/*
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* PKCS#12 decoder. It operates by decoding all of the blob content,
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* extracting all the interesting data from it and storing them internally,
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* then serving them one piece at a time.
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*/
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static OSSL_STORE_INFO *try_decode_PKCS12(const char *pem_name,
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const char *pem_header,
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const unsigned char *blob,
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size_t len, void **pctx,
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int *matchcount,
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const UI_METHOD *ui_method,
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void *ui_data)
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{
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OSSL_STORE_INFO *store_info = NULL;
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STACK_OF(OSSL_STORE_INFO) *ctx = *pctx;
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if (ctx == NULL) {
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/* Initial parsing */
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PKCS12 *p12;
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int ok = 0;
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if (pem_name != NULL)
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/* No match, there is no PEM PKCS12 tag */
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return NULL;
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if ((p12 = d2i_PKCS12(NULL, &blob, len)) != NULL) {
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char *pass = NULL;
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char tpass[PEM_BUFSIZE];
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EVP_PKEY *pkey = NULL;
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X509 *cert = NULL;
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STACK_OF(X509) *chain = NULL;
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*matchcount = 1;
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if (PKCS12_verify_mac(p12, "", 0)
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|| PKCS12_verify_mac(p12, NULL, 0)) {
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pass = "";
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} else {
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if ((pass = file_get_pass(ui_method, tpass, PEM_BUFSIZE,
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"PKCS12 import password",
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ui_data)) == NULL) {
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OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS12,
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OSSL_STORE_R_PASSPHRASE_CALLBACK_ERROR);
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goto p12_end;
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}
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if (!PKCS12_verify_mac(p12, pass, strlen(pass))) {
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OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS12,
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OSSL_STORE_R_ERROR_VERIFYING_PKCS12_MAC);
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goto p12_end;
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}
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}
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if (PKCS12_parse(p12, pass, &pkey, &cert, &chain)) {
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OSSL_STORE_INFO *osi_pkey = NULL;
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OSSL_STORE_INFO *osi_cert = NULL;
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OSSL_STORE_INFO *osi_ca = NULL;
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if ((ctx = sk_OSSL_STORE_INFO_new_null()) != NULL
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&& (osi_pkey = OSSL_STORE_INFO_new_PKEY(pkey)) != NULL
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&& sk_OSSL_STORE_INFO_push(ctx, osi_pkey) != 0
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&& (osi_cert = OSSL_STORE_INFO_new_CERT(cert)) != NULL
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&& sk_OSSL_STORE_INFO_push(ctx, osi_cert) != 0) {
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ok = 1;
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osi_pkey = NULL;
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osi_cert = NULL;
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while(sk_X509_num(chain) > 0) {
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X509 *ca = sk_X509_value(chain, 0);
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if ((osi_ca = OSSL_STORE_INFO_new_CERT(ca)) == NULL
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|| sk_OSSL_STORE_INFO_push(ctx, osi_ca) == 0) {
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ok = 0;
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break;
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}
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osi_ca = NULL;
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(void)sk_X509_shift(chain);
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}
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}
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if (!ok) {
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OSSL_STORE_INFO_free(osi_ca);
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OSSL_STORE_INFO_free(osi_cert);
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OSSL_STORE_INFO_free(osi_pkey);
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sk_OSSL_STORE_INFO_pop_free(ctx, OSSL_STORE_INFO_free);
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EVP_PKEY_free(pkey);
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X509_free(cert);
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sk_X509_pop_free(chain, X509_free);
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ctx = NULL;
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}
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*pctx = ctx;
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}
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}
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p12_end:
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PKCS12_free(p12);
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if (!ok)
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return NULL;
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}
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if (ctx != NULL) {
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*matchcount = 1;
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store_info = sk_OSSL_STORE_INFO_shift(ctx);
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}
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return store_info;
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}
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static int eof_PKCS12(void *ctx_)
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{
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STACK_OF(OSSL_STORE_INFO) *ctx = ctx_;
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return ctx == NULL || sk_OSSL_STORE_INFO_num(ctx) == 0;
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}
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static void destroy_ctx_PKCS12(void **pctx)
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{
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STACK_OF(OSSL_STORE_INFO) *ctx = *pctx;
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sk_OSSL_STORE_INFO_pop_free(ctx, OSSL_STORE_INFO_free);
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*pctx = NULL;
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}
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static FILE_HANDLER PKCS12_handler = {
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"PKCS12",
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try_decode_PKCS12,
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eof_PKCS12,
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destroy_ctx_PKCS12,
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1 /* repeatable */
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};
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/*
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* Encrypted PKCS#8 decoder. It operates by just decrypting the given blob
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* into a new blob, which is returned as an EMBEDDED STORE_INFO. The whole
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* decoding process will then start over with the new blob.
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*/
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static OSSL_STORE_INFO *try_decode_PKCS8Encrypted(const char *pem_name,
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const char *pem_header,
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const unsigned char *blob,
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size_t len, void **pctx,
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int *matchcount,
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const UI_METHOD *ui_method,
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void *ui_data)
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{
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X509_SIG *p8 = NULL;
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char kbuf[PEM_BUFSIZE];
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char *pass = NULL;
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const X509_ALGOR *dalg = NULL;
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const ASN1_OCTET_STRING *doct = NULL;
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OSSL_STORE_INFO *store_info = NULL;
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BUF_MEM *mem = NULL;
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unsigned char *new_data = NULL;
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int new_data_len;
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if (pem_name != NULL) {
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if (strcmp(pem_name, PEM_STRING_PKCS8) != 0)
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return NULL;
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*matchcount = 1;
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}
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if ((p8 = d2i_X509_SIG(NULL, &blob, len)) == NULL)
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return NULL;
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*matchcount = 1;
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if ((mem = BUF_MEM_new()) == NULL) {
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OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS8ENCRYPTED,
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ERR_R_MALLOC_FAILURE);
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goto nop8;
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}
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if ((pass = file_get_pass(ui_method, kbuf, PEM_BUFSIZE,
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"PKCS8 decrypt password", ui_data)) == NULL) {
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OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS8ENCRYPTED,
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OSSL_STORE_R_BAD_PASSWORD_READ);
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goto nop8;
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}
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X509_SIG_get0(p8, &dalg, &doct);
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if (!PKCS12_pbe_crypt(dalg, pass, strlen(pass), doct->data, doct->length,
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&new_data, &new_data_len, 0))
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goto nop8;
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mem->data = (char *)new_data;
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mem->max = mem->length = (size_t)new_data_len;
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X509_SIG_free(p8);
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store_info = ossl_store_info_new_EMBEDDED(PEM_STRING_PKCS8INF, mem);
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if (store_info == NULL) {
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OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS8ENCRYPTED,
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ERR_R_MALLOC_FAILURE);
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goto nop8;
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}
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return store_info;
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nop8:
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X509_SIG_free(p8);
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BUF_MEM_free(mem);
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return NULL;
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}
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|
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static FILE_HANDLER PKCS8Encrypted_handler = {
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"PKCS8Encrypted",
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try_decode_PKCS8Encrypted
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};
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|
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/*
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* Private key decoder. Decodes all sorts of private keys, both PKCS#8
|
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* encoded ones and old style PEM ones (with the key type is encoded into
|
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* the PEM name).
|
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*/
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int pem_check_suffix(const char *pem_str, const char *suffix);
|
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static OSSL_STORE_INFO *try_decode_PrivateKey(const char *pem_name,
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const char *pem_header,
|
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const unsigned char *blob,
|
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size_t len, void **pctx,
|
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int *matchcount,
|
|
const UI_METHOD *ui_method,
|
|
void *ui_data)
|
|
{
|
|
OSSL_STORE_INFO *store_info = NULL;
|
|
EVP_PKEY *pkey = NULL;
|
|
const EVP_PKEY_ASN1_METHOD *ameth = NULL;
|
|
|
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if (pem_name != NULL) {
|
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if (strcmp(pem_name, PEM_STRING_PKCS8INF) == 0) {
|
|
PKCS8_PRIV_KEY_INFO *p8inf =
|
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d2i_PKCS8_PRIV_KEY_INFO(NULL, &blob, len);
|
|
|
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*matchcount = 1;
|
|
if (p8inf != NULL)
|
|
pkey = EVP_PKCS82PKEY(p8inf);
|
|
PKCS8_PRIV_KEY_INFO_free(p8inf);
|
|
} else {
|
|
int slen;
|
|
|
|
if ((slen = pem_check_suffix(pem_name, "PRIVATE KEY")) > 0
|
|
&& (ameth = EVP_PKEY_asn1_find_str(NULL, pem_name,
|
|
slen)) != NULL) {
|
|
*matchcount = 1;
|
|
pkey = d2i_PrivateKey(ameth->pkey_id, NULL, &blob, len);
|
|
}
|
|
}
|
|
} else {
|
|
int i;
|
|
#ifndef OPENSSL_NO_ENGINE
|
|
ENGINE *curengine = ENGINE_get_first();
|
|
|
|
while (curengine != NULL) {
|
|
ENGINE_PKEY_ASN1_METHS_PTR asn1meths =
|
|
ENGINE_get_pkey_asn1_meths(curengine);
|
|
|
|
if (asn1meths != NULL) {
|
|
const int *nids = NULL;
|
|
int nids_n = asn1meths(curengine, NULL, &nids, 0);
|
|
|
|
for (i = 0; i < nids_n; i++) {
|
|
EVP_PKEY_ASN1_METHOD *ameth2 = NULL;
|
|
EVP_PKEY *tmp_pkey = NULL;
|
|
const unsigned char *tmp_blob = blob;
|
|
|
|
if (!asn1meths(curengine, &ameth2, NULL, nids[i]))
|
|
continue;
|
|
if (ameth2 == NULL
|
|
|| ameth2->pkey_flags & ASN1_PKEY_ALIAS)
|
|
continue;
|
|
|
|
tmp_pkey = d2i_PrivateKey(ameth2->pkey_id, NULL,
|
|
&tmp_blob, len);
|
|
if (tmp_pkey != NULL) {
|
|
if (pkey != NULL)
|
|
EVP_PKEY_free(tmp_pkey);
|
|
else
|
|
pkey = tmp_pkey;
|
|
(*matchcount)++;
|
|
}
|
|
}
|
|
}
|
|
curengine = ENGINE_get_next(curengine);
|
|
}
|
|
#endif
|
|
|
|
for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) {
|
|
EVP_PKEY *tmp_pkey = NULL;
|
|
const unsigned char *tmp_blob = blob;
|
|
|
|
ameth = EVP_PKEY_asn1_get0(i);
|
|
if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
|
|
continue;
|
|
|
|
tmp_pkey = d2i_PrivateKey(ameth->pkey_id, NULL, &tmp_blob, len);
|
|
if (tmp_pkey != NULL) {
|
|
if (pkey != NULL)
|
|
EVP_PKEY_free(tmp_pkey);
|
|
else
|
|
pkey = tmp_pkey;
|
|
(*matchcount)++;
|
|
}
|
|
}
|
|
|
|
if (*matchcount > 1) {
|
|
EVP_PKEY_free(pkey);
|
|
pkey = NULL;
|
|
}
|
|
}
|
|
if (pkey == NULL)
|
|
/* No match */
|
|
return NULL;
|
|
|
|
store_info = OSSL_STORE_INFO_new_PKEY(pkey);
|
|
if (store_info == NULL)
|
|
EVP_PKEY_free(pkey);
|
|
|
|
return store_info;
|
|
}
|
|
|
|
static FILE_HANDLER PrivateKey_handler = {
|
|
"PrivateKey",
|
|
try_decode_PrivateKey
|
|
};
|
|
|
|
/*
|
|
* Public key decoder. Only supports SubjectPublicKeyInfo formatted keys.
|
|
*/
|
|
static OSSL_STORE_INFO *try_decode_PUBKEY(const char *pem_name,
|
|
const char *pem_header,
|
|
const unsigned char *blob,
|
|
size_t len, void **pctx,
|
|
int *matchcount,
|
|
const UI_METHOD *ui_method,
|
|
void *ui_data)
|
|
{
|
|
OSSL_STORE_INFO *store_info = NULL;
|
|
EVP_PKEY *pkey = NULL;
|
|
|
|
if (pem_name != NULL) {
|
|
if (strcmp(pem_name, PEM_STRING_PUBLIC) != 0)
|
|
/* No match */
|
|
return NULL;
|
|
*matchcount = 1;
|
|
}
|
|
|
|
if ((pkey = d2i_PUBKEY(NULL, &blob, len)) != NULL) {
|
|
*matchcount = 1;
|
|
store_info = OSSL_STORE_INFO_new_PKEY(pkey);
|
|
}
|
|
|
|
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,
|
|
size_t len, void **pctx,
|
|
int *matchcount,
|
|
const UI_METHOD *ui_method,
|
|
void *ui_data)
|
|
{
|
|
OSSL_STORE_INFO *store_info = NULL;
|
|
int slen = 0;
|
|
EVP_PKEY *pkey = NULL;
|
|
const EVP_PKEY_ASN1_METHOD *ameth = NULL;
|
|
int ok = 0;
|
|
|
|
if (pem_name != NULL) {
|
|
if ((slen = pem_check_suffix(pem_name, "PARAMETERS")) == 0)
|
|
return NULL;
|
|
*matchcount = 1;
|
|
}
|
|
|
|
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
|
|
&& ameth->param_decode(pkey, &blob, len))
|
|
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(tmp_pkey, ameth->pkey_id)
|
|
&& (ameth = EVP_PKEY_get0_asn1(tmp_pkey)) != NULL
|
|
&& ameth->param_decode != NULL
|
|
&& ameth->param_decode(tmp_pkey, &tmp_blob, len)) {
|
|
if (pkey != NULL)
|
|
EVP_PKEY_free(tmp_pkey);
|
|
else
|
|
pkey = tmp_pkey;
|
|
tmp_pkey = NULL;
|
|
(*matchcount)++;
|
|
}
|
|
}
|
|
|
|
EVP_PKEY_free(tmp_pkey);
|
|
if (*matchcount == 1) {
|
|
ok = 1;
|
|
}
|
|
}
|
|
|
|
if (ok)
|
|
store_info = OSSL_STORE_INFO_new_PARAMS(pkey);
|
|
if (store_info == NULL)
|
|
EVP_PKEY_free(pkey);
|
|
|
|
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,
|
|
size_t len, void **pctx,
|
|
int *matchcount,
|
|
const UI_METHOD *ui_method,
|
|
void *ui_data)
|
|
{
|
|
OSSL_STORE_INFO *store_info = NULL;
|
|
X509 *cert = NULL;
|
|
|
|
/*
|
|
* In most cases, we can try to interpret the serialized data as a trusted
|
|
* cert (X509 + X509_AUX) and fall back to reading it as a normal cert
|
|
* (just X509), but if the PEM name specifically declares it as a trusted
|
|
* cert, then no fallback should be engaged. |ignore_trusted| tells if
|
|
* the fallback can be used (1) or not (0).
|
|
*/
|
|
int ignore_trusted = 1;
|
|
|
|
if (pem_name != NULL) {
|
|
if (strcmp(pem_name, PEM_STRING_X509_TRUSTED) == 0)
|
|
ignore_trusted = 0;
|
|
else if (strcmp(pem_name, PEM_STRING_X509_OLD) != 0
|
|
&& strcmp(pem_name, PEM_STRING_X509) != 0)
|
|
/* No match */
|
|
return NULL;
|
|
*matchcount = 1;
|
|
}
|
|
|
|
if ((cert = d2i_X509_AUX(NULL, &blob, len)) != NULL
|
|
|| (ignore_trusted && (cert = d2i_X509(NULL, &blob, len)) != NULL)) {
|
|
*matchcount = 1;
|
|
store_info = OSSL_STORE_INFO_new_CERT(cert);
|
|
}
|
|
|
|
if (store_info == NULL)
|
|
X509_free(cert);
|
|
|
|
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,
|
|
size_t len, void **pctx,
|
|
int *matchcount,
|
|
const UI_METHOD *ui_method,
|
|
void *ui_data)
|
|
{
|
|
OSSL_STORE_INFO *store_info = NULL;
|
|
X509_CRL *crl = NULL;
|
|
|
|
if (pem_name != NULL) {
|
|
if (strcmp(pem_name, PEM_STRING_X509_CRL) != 0)
|
|
/* No match */
|
|
return NULL;
|
|
*matchcount = 1;
|
|
}
|
|
|
|
if ((crl = d2i_X509_CRL(NULL, &blob, len)) != NULL) {
|
|
*matchcount = 1;
|
|
store_info = OSSL_STORE_INFO_new_CRL(crl);
|
|
}
|
|
|
|
if (store_info == NULL)
|
|
X509_CRL_free(crl);
|
|
|
|
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,
|
|
&X509Certificate_handler,
|
|
&X509CRL_handler,
|
|
¶ms_handler,
|
|
&PUBKEY_handler,
|
|
&PrivateKey_handler,
|
|
};
|
|
|
|
|
|
/*-
|
|
* The loader itself
|
|
* -----------------
|
|
*/
|
|
|
|
struct ossl_store_loader_ctx_st {
|
|
enum {
|
|
is_raw = 0,
|
|
is_pem,
|
|
is_dir
|
|
} type;
|
|
int errcnt;
|
|
#define FILE_FLAG_SECMEM (1<<0)
|
|
unsigned int flags;
|
|
union {
|
|
struct { /* Used with is_raw and is_pem */
|
|
BIO *file;
|
|
|
|
/*
|
|
* The following are used when the handler is marked as
|
|
* repeatable
|
|
*/
|
|
const FILE_HANDLER *last_handler;
|
|
void *last_handler_ctx;
|
|
} file;
|
|
struct { /* Used with is_dir */
|
|
OPENSSL_DIR_CTX *ctx;
|
|
int end_reached;
|
|
char *uri;
|
|
|
|
/*
|
|
* When a search expression is given, these are filled in.
|
|
* |search_name| contains the file basename to look for.
|
|
* The string is exactly 8 characters long.
|
|
*/
|
|
char search_name[9];
|
|
|
|
/*
|
|
* The directory reading utility we have combines opening with
|
|
* reading the first name. To make sure we can detect the end
|
|
* at the right time, we read early and cache the name.
|
|
*/
|
|
const char *last_entry;
|
|
int last_errno;
|
|
} dir;
|
|
} _;
|
|
|
|
/* Expected object type. May be unspecified */
|
|
int expected_type;
|
|
};
|
|
|
|
static void OSSL_STORE_LOADER_CTX_free(OSSL_STORE_LOADER_CTX *ctx)
|
|
{
|
|
if (ctx->type == is_dir) {
|
|
OPENSSL_free(ctx->_.dir.uri);
|
|
} else {
|
|
if (ctx->_.file.last_handler != NULL) {
|
|
ctx->_.file.last_handler->destroy_ctx(&ctx->_.file.last_handler_ctx);
|
|
ctx->_.file.last_handler_ctx = NULL;
|
|
ctx->_.file.last_handler = NULL;
|
|
}
|
|
}
|
|
OPENSSL_free(ctx);
|
|
}
|
|
|
|
static OSSL_STORE_LOADER_CTX *file_open(const OSSL_STORE_LOADER *loader,
|
|
const char *uri,
|
|
const UI_METHOD *ui_method,
|
|
void *ui_data)
|
|
{
|
|
OSSL_STORE_LOADER_CTX *ctx = NULL;
|
|
struct stat st;
|
|
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) {
|
|
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_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;
|
|
}
|
|
|
|
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 (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);
|
|
return NULL;
|
|
}
|
|
|
|
if (S_ISDIR(st.st_mode)) {
|
|
/*
|
|
* Try to copy everything, even if we know that some of them must be
|
|
* NULL for the moment. This prevents errors in the future, when more
|
|
* components may be used.
|
|
*/
|
|
ctx->_.dir.uri = OPENSSL_strdup(uri);
|
|
ctx->type = is_dir;
|
|
|
|
if (ctx->_.dir.uri == NULL)
|
|
goto err;
|
|
|
|
ctx->_.dir.last_entry = OPENSSL_DIR_read(&ctx->_.dir.ctx, path);
|
|
ctx->_.dir.last_errno = errno;
|
|
if (ctx->_.dir.last_entry == NULL) {
|
|
if (ctx->_.dir.last_errno != 0) {
|
|
char errbuf[256];
|
|
OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN, ERR_R_SYS_LIB);
|
|
errno = ctx->_.dir.last_errno;
|
|
if (openssl_strerror_r(errno, errbuf, sizeof(errbuf)))
|
|
ERR_add_error_data(1, errbuf);
|
|
goto err;
|
|
}
|
|
ctx->_.dir.end_reached = 1;
|
|
}
|
|
} else {
|
|
BIO *buff = NULL;
|
|
char peekbuf[4096] = { 0, };
|
|
|
|
if ((buff = BIO_new(BIO_f_buffer())) == NULL
|
|
|| (ctx->_.file.file = BIO_new_file(path, "rb")) == NULL) {
|
|
BIO_free_all(buff);
|
|
goto err;
|
|
}
|
|
|
|
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 (strstr(peekbuf, "-----BEGIN ") != NULL)
|
|
ctx->type = is_pem;
|
|
}
|
|
}
|
|
|
|
return ctx;
|
|
err:
|
|
OSSL_STORE_LOADER_CTX_free(ctx);
|
|
return NULL;
|
|
}
|
|
|
|
static int file_ctrl(OSSL_STORE_LOADER_CTX *ctx, int cmd, va_list args)
|
|
{
|
|
int ret = 1;
|
|
|
|
switch (cmd) {
|
|
case OSSL_STORE_C_USE_SECMEM:
|
|
{
|
|
int on = *(va_arg(args, int *));
|
|
|
|
switch (on) {
|
|
case 0:
|
|
ctx->flags &= ~FILE_FLAG_SECMEM;
|
|
break;
|
|
case 1:
|
|
ctx->flags |= FILE_FLAG_SECMEM;
|
|
break;
|
|
default:
|
|
OSSL_STOREerr(OSSL_STORE_F_FILE_CTRL,
|
|
ERR_R_PASSED_INVALID_ARGUMENT);
|
|
ret = 0;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int file_expect(OSSL_STORE_LOADER_CTX *ctx, int expected)
|
|
{
|
|
ctx->expected_type = expected;
|
|
return 1;
|
|
}
|
|
|
|
static int file_find(OSSL_STORE_LOADER_CTX *ctx, OSSL_STORE_SEARCH *search)
|
|
{
|
|
/*
|
|
* If ctx == NULL, the library is looking to know if this loader supports
|
|
* the given search type.
|
|
*/
|
|
|
|
if (OSSL_STORE_SEARCH_get_type(search) == OSSL_STORE_SEARCH_BY_NAME) {
|
|
unsigned long hash = 0;
|
|
|
|
if (ctx == NULL)
|
|
return 1;
|
|
|
|
if (ctx->type != is_dir) {
|
|
OSSL_STOREerr(OSSL_STORE_F_FILE_FIND,
|
|
OSSL_STORE_R_SEARCH_ONLY_SUPPORTED_FOR_DIRECTORIES);
|
|
return 0;
|
|
}
|
|
|
|
hash = X509_NAME_hash(OSSL_STORE_SEARCH_get0_name(search));
|
|
BIO_snprintf(ctx->_.dir.search_name, sizeof(ctx->_.dir.search_name),
|
|
"%08lx", hash);
|
|
return 1;
|
|
}
|
|
|
|
if (ctx != NULL)
|
|
OSSL_STOREerr(OSSL_STORE_F_FILE_FIND,
|
|
OSSL_STORE_R_UNSUPPORTED_SEARCH_TYPE);
|
|
return 0;
|
|
}
|
|
|
|
/* Internal function to decode an already opened PEM file */
|
|
OSSL_STORE_LOADER_CTX *ossl_store_file_attach_pem_bio_int(BIO *bp)
|
|
{
|
|
OSSL_STORE_LOADER_CTX *ctx = OPENSSL_zalloc(sizeof(*ctx));
|
|
|
|
if (ctx == NULL) {
|
|
OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_FILE_ATTACH_PEM_BIO_INT,
|
|
ERR_R_MALLOC_FAILURE);
|
|
return NULL;
|
|
}
|
|
|
|
ctx->_.file.file = bp;
|
|
ctx->type = is_pem;
|
|
|
|
return ctx;
|
|
}
|
|
|
|
static OSSL_STORE_INFO *file_load_try_decode(OSSL_STORE_LOADER_CTX *ctx,
|
|
const char *pem_name,
|
|
const char *pem_header,
|
|
unsigned char *data, size_t len,
|
|
const UI_METHOD *ui_method,
|
|
void *ui_data, int *matchcount)
|
|
{
|
|
OSSL_STORE_INFO *result = NULL;
|
|
BUF_MEM *new_mem = NULL;
|
|
char *new_pem_name = NULL;
|
|
int t = 0;
|
|
|
|
again:
|
|
{
|
|
size_t i = 0;
|
|
void *handler_ctx = NULL;
|
|
const FILE_HANDLER **matching_handlers =
|
|
OPENSSL_zalloc(sizeof(*matching_handlers)
|
|
* OSSL_NELEM(file_handlers));
|
|
|
|
if (matching_handlers == NULL) {
|
|
OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD_TRY_DECODE,
|
|
ERR_R_MALLOC_FAILURE);
|
|
goto err;
|
|
}
|
|
|
|
*matchcount = 0;
|
|
for (i = 0; i < OSSL_NELEM(file_handlers); i++) {
|
|
const FILE_HANDLER *handler = file_handlers[i];
|
|
int try_matchcount = 0;
|
|
void *tmp_handler_ctx = NULL;
|
|
OSSL_STORE_INFO *tmp_result =
|
|
handler->try_decode(pem_name, pem_header, data, len,
|
|
&tmp_handler_ctx, &try_matchcount,
|
|
ui_method, ui_data);
|
|
|
|
if (try_matchcount > 0) {
|
|
|
|
matching_handlers[*matchcount] = handler;
|
|
|
|
if (handler_ctx)
|
|
handler->destroy_ctx(&handler_ctx);
|
|
handler_ctx = tmp_handler_ctx;
|
|
|
|
if ((*matchcount += try_matchcount) > 1) {
|
|
/* more than one match => ambiguous, kill any result */
|
|
OSSL_STORE_INFO_free(result);
|
|
OSSL_STORE_INFO_free(tmp_result);
|
|
if (handler->destroy_ctx != NULL)
|
|
handler->destroy_ctx(&handler_ctx);
|
|
handler_ctx = NULL;
|
|
tmp_result = NULL;
|
|
result = NULL;
|
|
}
|
|
if (result == NULL)
|
|
result = tmp_result;
|
|
}
|
|
}
|
|
|
|
if (*matchcount == 1 && matching_handlers[0]->repeatable) {
|
|
ctx->_.file.last_handler = matching_handlers[0];
|
|
ctx->_.file.last_handler_ctx = handler_ctx;
|
|
}
|
|
|
|
OPENSSL_free(matching_handlers);
|
|
}
|
|
|
|
err:
|
|
OPENSSL_free(new_pem_name);
|
|
BUF_MEM_free(new_mem);
|
|
|
|
if (result != NULL
|
|
&& (t = OSSL_STORE_INFO_get_type(result)) == OSSL_STORE_INFO_EMBEDDED) {
|
|
pem_name = new_pem_name =
|
|
ossl_store_info_get0_EMBEDDED_pem_name(result);
|
|
new_mem = ossl_store_info_get0_EMBEDDED_buffer(result);
|
|
data = (unsigned char *)new_mem->data;
|
|
len = new_mem->length;
|
|
OPENSSL_free(result);
|
|
result = NULL;
|
|
goto again;
|
|
}
|
|
|
|
if (result != NULL)
|
|
ERR_clear_error();
|
|
|
|
return result;
|
|
}
|
|
|
|
static OSSL_STORE_INFO *file_load_try_repeat(OSSL_STORE_LOADER_CTX *ctx,
|
|
const UI_METHOD *ui_method,
|
|
void *ui_data)
|
|
{
|
|
OSSL_STORE_INFO *result = NULL;
|
|
int try_matchcount = 0;
|
|
|
|
if (ctx->_.file.last_handler != NULL) {
|
|
result =
|
|
ctx->_.file.last_handler->try_decode(NULL, NULL, NULL, 0,
|
|
&ctx->_.file.last_handler_ctx,
|
|
&try_matchcount,
|
|
ui_method, ui_data);
|
|
|
|
if (result == NULL) {
|
|
ctx->_.file.last_handler->destroy_ctx(&ctx->_.file.last_handler_ctx);
|
|
ctx->_.file.last_handler_ctx = NULL;
|
|
ctx->_.file.last_handler = NULL;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static void pem_free_flag(void *pem_data, int secure, size_t num)
|
|
{
|
|
if (secure)
|
|
OPENSSL_secure_clear_free(pem_data, num);
|
|
else
|
|
OPENSSL_free(pem_data);
|
|
}
|
|
static int file_read_pem(BIO *bp, char **pem_name, char **pem_header,
|
|
unsigned char **data, long *len,
|
|
const UI_METHOD *ui_method,
|
|
void *ui_data, int secure)
|
|
{
|
|
int i = secure
|
|
? PEM_read_bio_ex(bp, pem_name, pem_header, data, len,
|
|
PEM_FLAG_SECURE | PEM_FLAG_EAY_COMPATIBLE)
|
|
: PEM_read_bio(bp, pem_name, pem_header, data, len);
|
|
|
|
if (i <= 0)
|
|
return 0;
|
|
|
|
/*
|
|
* 10 is the number of characters in "Proc-Type:", which
|
|
* PEM_get_EVP_CIPHER_INFO() requires to be present.
|
|
* If the PEM header has less characters than that, it's
|
|
* not worth spending cycles on it.
|
|
*/
|
|
if (strlen(*pem_header) > 10) {
|
|
EVP_CIPHER_INFO cipher;
|
|
struct pem_pass_data pass_data;
|
|
|
|
if (!PEM_get_EVP_CIPHER_INFO(*pem_header, &cipher)
|
|
|| !file_fill_pem_pass_data(&pass_data, "PEM", ui_method, ui_data)
|
|
|| !PEM_do_header(&cipher, *data, len, file_get_pem_pass,
|
|
&pass_data)) {
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int file_read_asn1(BIO *bp, unsigned char **data, long *len)
|
|
{
|
|
BUF_MEM *mem = NULL;
|
|
|
|
if (asn1_d2i_read_bio(bp, &mem) < 0)
|
|
return 0;
|
|
|
|
*data = (unsigned char *)mem->data;
|
|
*len = (long)mem->length;
|
|
OPENSSL_free(mem);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int ends_with_dirsep(const char *uri)
|
|
{
|
|
if (*uri != '\0')
|
|
uri += strlen(uri) - 1;
|
|
#if defined __VMS
|
|
if (*uri == ']' || *uri == '>' || *uri == ':')
|
|
return 1;
|
|
#elif defined _WIN32
|
|
if (*uri == '\\')
|
|
return 1;
|
|
#endif
|
|
return *uri == '/';
|
|
}
|
|
|
|
static int file_name_to_uri(OSSL_STORE_LOADER_CTX *ctx, const char *name,
|
|
char **data)
|
|
{
|
|
assert(name != NULL);
|
|
assert(data != NULL);
|
|
{
|
|
const char *pathsep = ends_with_dirsep(ctx->_.dir.uri) ? "" : "/";
|
|
long calculated_length = strlen(ctx->_.dir.uri) + strlen(pathsep)
|
|
+ strlen(name) + 1 /* \0 */;
|
|
|
|
*data = OPENSSL_zalloc(calculated_length);
|
|
if (*data == NULL) {
|
|
OSSL_STOREerr(OSSL_STORE_F_FILE_NAME_TO_URI, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
|
|
OPENSSL_strlcat(*data, ctx->_.dir.uri, calculated_length);
|
|
OPENSSL_strlcat(*data, pathsep, calculated_length);
|
|
OPENSSL_strlcat(*data, name, calculated_length);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int file_name_check(OSSL_STORE_LOADER_CTX *ctx, const char *name)
|
|
{
|
|
const char *p = NULL;
|
|
|
|
/* If there are no search criteria, all names are accepted */
|
|
if (ctx->_.dir.search_name[0] == '\0')
|
|
return 1;
|
|
|
|
/* If the expected type isn't supported, no name is accepted */
|
|
if (ctx->expected_type != 0
|
|
&& ctx->expected_type != OSSL_STORE_INFO_CERT
|
|
&& ctx->expected_type != OSSL_STORE_INFO_CRL)
|
|
return 0;
|
|
|
|
/*
|
|
* First, check the basename
|
|
*/
|
|
if (strncasecmp(name, ctx->_.dir.search_name,
|
|
sizeof(ctx->_.dir.search_name) - 1) != 0
|
|
|| name[sizeof(ctx->_.dir.search_name) - 1] != '.')
|
|
return 0;
|
|
p = &name[sizeof(ctx->_.dir.search_name)];
|
|
|
|
/*
|
|
* Then, if the expected type is a CRL, check that the extension starts
|
|
* with 'r'
|
|
*/
|
|
if (*p == 'r') {
|
|
p++;
|
|
if (ctx->expected_type != 0
|
|
&& ctx->expected_type != OSSL_STORE_INFO_CRL)
|
|
return 0;
|
|
} else if (ctx->expected_type == OSSL_STORE_INFO_CRL) {
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Last, check that the rest of the extension is a decimal number, at
|
|
* least one digit long.
|
|
*/
|
|
if (!ossl_isdigit(*p))
|
|
return 0;
|
|
while (ossl_isdigit(*p))
|
|
p++;
|
|
|
|
# ifdef __VMS
|
|
/*
|
|
* One extra step here, check for a possible generation number.
|
|
*/
|
|
if (*p == ';')
|
|
for (p++; *p != '\0'; p++)
|
|
if (!ossl_isdigit(*p))
|
|
break;
|
|
# endif
|
|
|
|
/*
|
|
* If we've reached the end of the string at this point, we've successfully
|
|
* found a fitting file name.
|
|
*/
|
|
return *p == '\0';
|
|
}
|
|
|
|
static int file_eof(OSSL_STORE_LOADER_CTX *ctx);
|
|
static int file_error(OSSL_STORE_LOADER_CTX *ctx);
|
|
static OSSL_STORE_INFO *file_load(OSSL_STORE_LOADER_CTX *ctx,
|
|
const UI_METHOD *ui_method, void *ui_data)
|
|
{
|
|
OSSL_STORE_INFO *result = NULL;
|
|
|
|
ctx->errcnt = 0;
|
|
ERR_clear_error();
|
|
|
|
if (ctx->type == is_dir) {
|
|
do {
|
|
char *newname = NULL;
|
|
|
|
if (ctx->_.dir.last_entry == NULL) {
|
|
if (!ctx->_.dir.end_reached) {
|
|
char errbuf[256];
|
|
assert(ctx->_.dir.last_errno != 0);
|
|
OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD, ERR_R_SYS_LIB);
|
|
errno = ctx->_.dir.last_errno;
|
|
ctx->errcnt++;
|
|
if (openssl_strerror_r(errno, errbuf, sizeof(errbuf)))
|
|
ERR_add_error_data(1, errbuf);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
if (ctx->_.dir.last_entry[0] != '.'
|
|
&& file_name_check(ctx, ctx->_.dir.last_entry)
|
|
&& !file_name_to_uri(ctx, ctx->_.dir.last_entry, &newname))
|
|
return NULL;
|
|
|
|
/*
|
|
* On the first call (with a NULL context), OPENSSL_DIR_read()
|
|
* cares about the second argument. On the following calls, it
|
|
* only cares that it isn't NULL. Therefore, we can safely give
|
|
* it our URI here.
|
|
*/
|
|
ctx->_.dir.last_entry = OPENSSL_DIR_read(&ctx->_.dir.ctx,
|
|
ctx->_.dir.uri);
|
|
ctx->_.dir.last_errno = errno;
|
|
if (ctx->_.dir.last_entry == NULL && ctx->_.dir.last_errno == 0)
|
|
ctx->_.dir.end_reached = 1;
|
|
|
|
if (newname != NULL
|
|
&& (result = OSSL_STORE_INFO_new_NAME(newname)) == NULL) {
|
|
OPENSSL_free(newname);
|
|
OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD, ERR_R_OSSL_STORE_LIB);
|
|
return NULL;
|
|
}
|
|
} while (result == NULL && !file_eof(ctx));
|
|
} else {
|
|
int matchcount = -1;
|
|
|
|
again:
|
|
result = file_load_try_repeat(ctx, ui_method, ui_data);
|
|
if (result != NULL)
|
|
return result;
|
|
|
|
if (file_eof(ctx))
|
|
return NULL;
|
|
|
|
do {
|
|
char *pem_name = NULL; /* PEM record name */
|
|
char *pem_header = NULL; /* PEM record header */
|
|
unsigned char *data = NULL; /* DER encoded data */
|
|
long len = 0; /* DER encoded data length */
|
|
|
|
matchcount = -1;
|
|
if (ctx->type == is_pem) {
|
|
if (!file_read_pem(ctx->_.file.file, &pem_name, &pem_header,
|
|
&data, &len, ui_method, ui_data,
|
|
(ctx->flags & FILE_FLAG_SECMEM) != 0)) {
|
|
ctx->errcnt++;
|
|
goto endloop;
|
|
}
|
|
} else {
|
|
if (!file_read_asn1(ctx->_.file.file, &data, &len)) {
|
|
ctx->errcnt++;
|
|
goto endloop;
|
|
}
|
|
}
|
|
|
|
result = file_load_try_decode(ctx, pem_name, pem_header, data, len,
|
|
ui_method, ui_data, &matchcount);
|
|
|
|
if (result != NULL)
|
|
goto endloop;
|
|
|
|
/*
|
|
* If a PEM name matches more than one handler, the handlers are
|
|
* badly coded.
|
|
*/
|
|
if (!ossl_assert(pem_name == NULL || matchcount <= 1)) {
|
|
ctx->errcnt++;
|
|
goto endloop;
|
|
}
|
|
|
|
if (matchcount > 1) {
|
|
OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD,
|
|
OSSL_STORE_R_AMBIGUOUS_CONTENT_TYPE);
|
|
} else if (matchcount == 1) {
|
|
/*
|
|
* If there are other errors on the stack, they already show
|
|
* what the problem is.
|
|
*/
|
|
if (ERR_peek_error() == 0) {
|
|
OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD,
|
|
OSSL_STORE_R_UNSUPPORTED_CONTENT_TYPE);
|
|
if (pem_name != NULL)
|
|
ERR_add_error_data(3, "PEM type is '", pem_name, "'");
|
|
}
|
|
}
|
|
if (matchcount > 0)
|
|
ctx->errcnt++;
|
|
|
|
endloop:
|
|
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 */
|
|
if (matchcount > 1)
|
|
return NULL;
|
|
|
|
if (result != NULL
|
|
&& ctx->expected_type != 0
|
|
&& ctx->expected_type != OSSL_STORE_INFO_get_type(result)) {
|
|
OSSL_STORE_INFO_free(result);
|
|
goto again;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static int file_error(OSSL_STORE_LOADER_CTX *ctx)
|
|
{
|
|
return ctx->errcnt > 0;
|
|
}
|
|
|
|
static int file_eof(OSSL_STORE_LOADER_CTX *ctx)
|
|
{
|
|
if (ctx->type == is_dir)
|
|
return ctx->_.dir.end_reached;
|
|
|
|
if (ctx->_.file.last_handler != NULL
|
|
&& !ctx->_.file.last_handler->eof(ctx->_.file.last_handler_ctx))
|
|
return 0;
|
|
return BIO_eof(ctx->_.file.file);
|
|
}
|
|
|
|
static int file_close(OSSL_STORE_LOADER_CTX *ctx)
|
|
{
|
|
if (ctx->type == is_dir) {
|
|
OPENSSL_DIR_end(&ctx->_.dir.ctx);
|
|
} else {
|
|
BIO_free_all(ctx->_.file.file);
|
|
}
|
|
OSSL_STORE_LOADER_CTX_free(ctx);
|
|
return 1;
|
|
}
|
|
|
|
int ossl_store_file_detach_pem_bio_int(OSSL_STORE_LOADER_CTX *ctx)
|
|
{
|
|
OSSL_STORE_LOADER_CTX_free(ctx);
|
|
return 1;
|
|
}
|
|
|
|
static OSSL_STORE_LOADER file_loader =
|
|
{
|
|
"file",
|
|
NULL,
|
|
file_open,
|
|
file_ctrl,
|
|
file_expect,
|
|
file_find,
|
|
file_load,
|
|
file_eof,
|
|
file_error,
|
|
file_close
|
|
};
|
|
|
|
static void store_file_loader_deinit(void)
|
|
{
|
|
ossl_store_unregister_loader_int(file_loader.scheme);
|
|
}
|
|
|
|
int ossl_store_file_loader_init(void)
|
|
{
|
|
int ret = ossl_store_register_loader_int(&file_loader);
|
|
|
|
OPENSSL_atexit(store_file_loader_deinit);
|
|
return ret;
|
|
}
|