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-rw-r--r--source/pdf/pdf-pkcs7.c161
1 files changed, 80 insertions, 81 deletions
diff --git a/source/pdf/pdf-pkcs7.c b/source/pdf/pdf-pkcs7.c
index 403c3f7d..2f3382bd 100644
--- a/source/pdf/pdf-pkcs7.c
+++ b/source/pdf/pdf-pkcs7.c
@@ -74,6 +74,11 @@ static const char AdobeCA_p7c[] = {
#include "openssl/pem.h"
#include "openssl/pkcs7.h"
#include "openssl/pkcs12.h"
+#include "openssl/opensslv.h"
+
+#ifndef OPENSSL_VERSION_NUMBER
+#warning detect version of openssl at compile time
+#endif
enum
{
@@ -91,7 +96,7 @@ typedef struct bsegs_struct
static int bsegs_read(BIO *b, char *buf, int size)
{
- BIO_SEGS_CTX *ctx = (BIO_SEGS_CTX *)b->ptr;
+ BIO_SEGS_CTX *ctx = (BIO_SEGS_CTX *) BIO_get_data(b);
int read = 0;
while (size > 0 && ctx->current_seg < ctx->nsegs)
@@ -104,9 +109,15 @@ static int bsegs_read(BIO *b, char *buf, int size)
if (nb > 0)
{
if (ctx->seg_pos == 0)
- (void)BIO_seek(b->next_bio, ctx->seg[ctx->current_seg][SEG_START]);
+ {
+ if (BIO_seek(BIO_next(b), ctx->seg[ctx->current_seg][SEG_START]) < 0)
+ return read;
+ }
+
+ nb = BIO_read(BIO_next(b), buf, nb);
+ if (nb < 0)
+ return read;
- (void)BIO_read(b->next_bio, buf, nb);
ctx->seg_pos += nb;
read += nb;
buf += nb;
@@ -126,7 +137,7 @@ static int bsegs_read(BIO *b, char *buf, int size)
static long bsegs_ctrl(BIO *b, int cmd, long arg1, void *arg2)
{
- return BIO_ctrl(b->next_bio, cmd, arg1, arg2);
+ return BIO_ctrl(BIO_next(b), cmd, arg1, arg2);
}
static int bsegs_new(BIO *b)
@@ -142,10 +153,9 @@ static int bsegs_new(BIO *b)
ctx->seg = NULL;
ctx->nsegs = 0;
- b->init = 1;
- b->ptr = (char *)ctx;
- b->flags = 0;
- b->num = 0;
+ BIO_set_init(b, 1);
+ BIO_set_data(b, ctx);
+ BIO_clear_flags(b, INT_MAX);
return 1;
}
@@ -155,77 +165,69 @@ static int bsegs_free(BIO *b)
if (b == NULL)
return 0;
- free(b->ptr);
- b->ptr = NULL;
- b->init = 0;
- b->flags = 0;
+ free(BIO_get_data(b));
+ BIO_set_data(b, NULL);
+ BIO_set_init(b, 0);
+ BIO_clear_flags(b, INT_MAX);
return 1;
}
static long bsegs_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp)
{
- return BIO_callback_ctrl(b->next_bio, cmd, fp);
+ return BIO_callback_ctrl(BIO_next(b), cmd, fp);
}
-static BIO_METHOD methods_bsegs =
-{
- 0,"segment reader",
- NULL,
- bsegs_read,
- NULL,
- NULL,
- bsegs_ctrl,
- bsegs_new,
- bsegs_free,
- bsegs_callback_ctrl,
-};
+static BIO_METHOD *methods_bsegs = NULL;
static BIO_METHOD *BIO_f_segments(void)
{
- return &methods_bsegs;
+ if (methods_bsegs)
+ return methods_bsegs;
+
+ methods_bsegs = BIO_meth_new(BIO_TYPE_NONE, "segment reader");
+ if (!methods_bsegs)
+ return NULL;
+
+ if (!BIO_meth_set_read(methods_bsegs, bsegs_read) ||
+ !BIO_meth_set_ctrl(methods_bsegs, bsegs_ctrl) ||
+ !BIO_meth_set_create(methods_bsegs, bsegs_new) ||
+ !BIO_meth_set_destroy(methods_bsegs, bsegs_free) ||
+ !BIO_meth_set_callback_ctrl(methods_bsegs, bsegs_callback_ctrl))
+
+ {
+ BIO_meth_free(methods_bsegs);
+ methods_bsegs = NULL;
+ }
+
+ return methods_bsegs;
}
static void BIO_set_segments(BIO *b, int (*seg)[2], int nsegs)
{
- BIO_SEGS_CTX *ctx = (BIO_SEGS_CTX *)b->ptr;
+ BIO_SEGS_CTX *ctx = (BIO_SEGS_CTX *) BIO_get_data(b);
ctx->seg = seg;
ctx->nsegs = nsegs;
}
-typedef struct verify_context_s
-{
- X509_STORE_CTX x509_ctx;
- char certdesc[256];
- int err;
-} verify_context;
-
static int verify_callback(int ok, X509_STORE_CTX *ctx)
{
- verify_context *vctx;
- X509 *err_cert;
int err, depth;
- vctx = (verify_context *)ctx;
-
- err_cert = X509_STORE_CTX_get_current_cert(ctx);
err = X509_STORE_CTX_get_error(ctx);
depth = X509_STORE_CTX_get_error_depth(ctx);
- X509_NAME_oneline(X509_get_subject_name(err_cert), vctx->certdesc, sizeof(vctx->certdesc));
-
if (!ok && depth >= 6)
{
X509_STORE_CTX_set_error(ctx, X509_V_ERR_CERT_CHAIN_TOO_LONG);
}
- switch (ctx->error)
+ switch (err)
{
case X509_V_ERR_INVALID_PURPOSE:
case X509_V_ERR_CERT_HAS_EXPIRED:
case X509_V_ERR_KEYUSAGE_NO_CERTSIGN:
- err = X509_V_OK;
X509_STORE_CTX_set_error(ctx, X509_V_OK);
ok = 1;
break;
@@ -242,37 +244,41 @@ static int verify_callback(int ok, X509_STORE_CTX *ctx)
break;
}
- if (ok && vctx->err == X509_V_OK)
- vctx->err = err;
return ok;
}
static int pk7_verify(X509_STORE *cert_store, PKCS7 *p7, BIO *detached, char *ebuf, int ebufsize)
{
PKCS7_SIGNER_INFO *si;
- verify_context vctx;
BIO *p7bio=NULL;
char readbuf[1024*4];
int res = 1;
int i;
STACK_OF(PKCS7_SIGNER_INFO) *sk;
+ X509_STORE_CTX *ctx;
- vctx.err = X509_V_OK;
ebuf[0] = 0;
+ ctx = X509_STORE_CTX_new();
+
OpenSSL_add_all_algorithms();
- EVP_add_digest(EVP_md5());
- EVP_add_digest(EVP_sha1());
+ if (!EVP_add_digest(EVP_md5()) ||
+ !EVP_add_digest(EVP_sha1()) ||
+ !ERR_load_crypto_strings())
+ goto exit;
- ERR_load_crypto_strings();
ERR_clear_error();
+ ERR_load_BIO_strings();
+ ERR_load_crypto_strings();
+ ERR_load_X509_strings();
- X509_VERIFY_PARAM_set_flags(cert_store->param, X509_V_FLAG_CB_ISSUER_CHECK);
X509_STORE_set_verify_cb_func(cert_store, verify_callback);
p7bio = PKCS7_dataInit(p7, detached);
+ if (!p7bio)
+ goto exit;
/* We now have to 'read' from p7bio to calculate digests etc. */
while (BIO_read(p7bio, readbuf, sizeof(readbuf)) > 0)
@@ -292,28 +298,21 @@ static int pk7_verify(X509_STORE *cert_store, PKCS7 *p7, BIO *detached, char *eb
{
int rc;
si = sk_PKCS7_SIGNER_INFO_value(sk, i);
- rc = PKCS7_dataVerify(cert_store, &vctx.x509_ctx, p7bio,p7, si);
- if (rc <= 0 || vctx.err != X509_V_OK)
+ rc = PKCS7_dataVerify(cert_store, ctx, p7bio, p7, si);
+ if (rc == 0)
{
- char tbuf[120];
-
- if (rc <= 0)
- {
- fz_strlcpy(ebuf, ERR_error_string(ERR_get_error(), tbuf), ebufsize);
- }
- else
- {
- /* Error while checking the certificate chain */
- fz_snprintf(ebuf, ebufsize, "%s(%d): %s", X509_verify_cert_error_string(vctx.err), vctx.err, vctx.certdesc);
- }
-
+ unsigned long err = ERR_get_error();
+ ERR_error_string_n(err, ebuf, ebufsize);
+ strncat(ebuf, ":", ebufsize);
+ err = X509_STORE_CTX_get_error(ctx);
+ strncat(ebuf, X509_verify_cert_error_string(err), ebufsize);
res = 0;
goto exit;
}
}
exit:
- X509_STORE_CTX_cleanup(&vctx.x509_ctx);
+ X509_STORE_CTX_cleanup(ctx);
ERR_free_strings();
return res;
@@ -346,7 +345,7 @@ static int verify_sig(char *sig, int sig_len, char *file, int (*byte_range)[2],
if (bsegs == NULL)
goto exit;
- bsegs->next_bio = bdata;
+ BIO_set_next(bsegs, bdata);
BIO_set_segments(bsegs, byte_range, byte_range_len);
/* Find the certificates in the pk7 file */
@@ -359,9 +358,6 @@ static int verify_sig(char *sig, int sig_len, char *file, int (*byte_range)[2],
switch (t)
{
case NID_pkcs7_signed:
- certs = pk7cert->d.sign->cert;
- break;
-
case NID_pkcs7_signedAndEnveloped:
certs = pk7cert->d.sign->cert;
break;
@@ -418,26 +414,29 @@ void pdf_drop_designated_name(fz_context *ctx, pdf_designated_name *dn)
fz_free(ctx, dn);
}
-static void add_from_bags(X509 **pX509, EVP_PKEY **pPkey, STACK_OF(PKCS12_SAFEBAG) *bags, const char *pw);
+static void add_from_bags(X509 **pX509, EVP_PKEY **pPkey, const STACK_OF(PKCS12_SAFEBAG) *bags, const char *pw);
static void add_from_bag(X509 **pX509, EVP_PKEY **pPkey, PKCS12_SAFEBAG *bag, const char *pw)
{
EVP_PKEY *pkey = NULL;
X509 *x509 = NULL;
- PKCS8_PRIV_KEY_INFO *p8 = NULL;
switch (M_PKCS12_bag_type(bag))
{
case NID_keyBag:
- p8 = bag->value.keybag;
- pkey = EVP_PKCS82PKEY(p8);
+ {
+ const PKCS8_PRIV_KEY_INFO *p8 = PKCS12_SAFEBAG_get0_p8inf(bag);
+ pkey = EVP_PKCS82PKEY(p8);
+ }
break;
case NID_pkcs8ShroudedKeyBag:
- p8 = PKCS12_decrypt_skey(bag, pw, (int)strlen(pw));
- if (p8)
{
- pkey = EVP_PKCS82PKEY(p8);
- PKCS8_PRIV_KEY_INFO_free(p8);
+ PKCS8_PRIV_KEY_INFO *p8 = PKCS12_decrypt_skey(bag, pw, (int)strlen(pw));
+ if (p8)
+ {
+ pkey = EVP_PKCS82PKEY(p8);
+ PKCS8_PRIV_KEY_INFO_free(p8);
+ }
}
break;
@@ -447,7 +446,7 @@ static void add_from_bag(X509 **pX509, EVP_PKEY **pPkey, PKCS12_SAFEBAG *bag, co
break;
case NID_safeContentsBag:
- add_from_bags(pX509, pPkey, bag->value.safes, pw);
+ add_from_bags(pX509, pPkey, PKCS12_SAFEBAG_get0_safes(bag), pw);
break;
}
@@ -468,7 +467,7 @@ static void add_from_bag(X509 **pX509, EVP_PKEY **pPkey, PKCS12_SAFEBAG *bag, co
}
}
-static void add_from_bags(X509 **pX509, EVP_PKEY **pPkey, STACK_OF(PKCS12_SAFEBAG) *bags, const char *pw)
+static void add_from_bags(X509 **pX509, EVP_PKEY **pPkey, const STACK_OF(PKCS12_SAFEBAG) *bags, const char *pw)
{
int i;
@@ -643,7 +642,7 @@ void pdf_write_digest(fz_context *ctx, pdf_document *doc, const char *filename,
if (bsegs == NULL)
fz_throw(ctx, FZ_ERROR_GENERIC, "Failed to create segment filter");
- bsegs->next_bio = bdata;
+ BIO_set_next(bsegs, bdata);
BIO_set_segments(bsegs, brange, brange_len);
p7 = PKCS7_new();
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-31 20:50:59 +0000