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-rw-r--r--sm/verify.c49
1 files changed, 37 insertions, 12 deletions
diff --git a/sm/verify.c b/sm/verify.c
index b52b905fd..350e4f42c 100644
--- a/sm/verify.c
+++ b/sm/verify.c
@@ -83,9 +83,7 @@ store_cert (KsbaCert cert)
}
-
-
-
+/* Hash the data for a detached signature */
static void
hash_data (int fd, GCRY_MD_HD md)
{
@@ -112,16 +110,20 @@ hash_data (int fd, GCRY_MD_HD md)
}
+
/* Perform a verify operation. To verify detached signatures, data_fd
- must be different than -1 */
+ must be different than -1. With OUT_FP given and a non-detached
+ signature, the signed material is written to that stream. */
int
-gpgsm_verify (CTRL ctrl, int in_fd, int data_fd)
+gpgsm_verify (CTRL ctrl, int in_fd, int data_fd, FILE *out_fp)
{
int i, rc;
Base64Context b64reader = NULL;
+ Base64Context b64writer = NULL;
KsbaError err;
KsbaReader reader;
+ KsbaWriter writer = NULL;
KsbaCMS cms = NULL;
KsbaStopReason stopreason;
KsbaCert cert;
@@ -157,6 +159,16 @@ gpgsm_verify (CTRL ctrl, int in_fd, int data_fd)
goto leave;
}
+ if (out_fp)
+ {
+ rc = gpgsm_create_writer (&b64writer, ctrl, out_fp, &writer);
+ if (rc)
+ {
+ log_error ("can't create writer: %s\n", gnupg_strerror (rc));
+ goto leave;
+ }
+ }
+
cms = ksba_cms_new ();
if (!cms)
{
@@ -164,7 +176,7 @@ gpgsm_verify (CTRL ctrl, int in_fd, int data_fd)
goto leave;
}
- err = ksba_cms_set_reader_writer (cms, reader, NULL);
+ err = ksba_cms_set_reader_writer (cms, reader, writer);
if (err)
{
log_debug ("ksba_cms_set_reader_writer failed: %s\n",
@@ -199,12 +211,6 @@ gpgsm_verify (CTRL ctrl, int in_fd, int data_fd)
is_detached = 1;
log_debug ("Detached signature\n");
}
- if (stopreason == KSBA_SR_BEGIN_DATA)
- {
- log_error ("error: only detached signatures are supportted\n");
- rc = GNUPG_Not_Implemented;
- goto leave;
- }
if (stopreason == KSBA_SR_NEED_HASH
|| stopreason == KSBA_SR_BEGIN_DATA)
@@ -228,10 +234,28 @@ gpgsm_verify (CTRL ctrl, int in_fd, int data_fd)
}
hash_data (data_fd, data_md);
}
+ else
+ {
+ ksba_cms_set_hash_function (cms, HASH_FNC, data_md);
+ }
+ }
+ else if (stopreason == KSBA_SR_END_DATA)
+ { /* The data bas been hashed */
+
}
}
while (stopreason != KSBA_SR_READY);
+ if (b64writer)
+ {
+ rc = gpgsm_finish_writer (b64writer);
+ if (rc)
+ {
+ log_error ("write failed: %s\n", gnupg_strerror (rc));
+ goto leave;
+ }
+ }
+
if (data_fd != -1 && !is_detached)
{
log_error ("data given for a non-detached signature\n");
@@ -418,6 +442,7 @@ gpgsm_verify (CTRL ctrl, int in_fd, int data_fd)
leave:
ksba_cms_release (cms);
gpgsm_destroy_reader (b64reader);
+ gpgsm_destroy_writer (b64writer);
keydb_release (kh);
gcry_md_close (data_md);
if (fp)