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-rw-r--r--common/pem.c290
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diff --git a/common/pem.c b/common/pem.c
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--- a/common/pem.c
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@@ -1,290 +0,0 @@
-/*
- * Copyright (C) 2012 Red Hat Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above
- * copyright notice, this list of conditions and the
- * following disclaimer.
- * * Redistributions in binary form must reproduce the
- * above copyright notice, this list of conditions and
- * the following disclaimer in the documentation and/or
- * other materials provided with the distribution.
- * * The names of contributors to this software may not be
- * used to endorse or promote products derived from this
- * software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
- * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- * Author: Stef Walter <stefw@redhat.com>
- */
-
-#include "config.h"
-
-#include "compat.h"
-#include "base64.h"
-#include "buffer.h"
-#include "debug.h"
-#include "pem.h"
-
-#include <assert.h>
-#include <ctype.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define ARMOR_SUFF "-----"
-#define ARMOR_SUFF_L 5
-#define ARMOR_PREF_BEGIN "-----BEGIN "
-#define ARMOR_PREF_BEGIN_L 11
-#define ARMOR_PREF_END "-----END "
-#define ARMOR_PREF_END_L 9
-
-enum {
- NONE = 0,
- TRUSTED_CERTIFICATE,
- CERTIFICATE
-};
-
-static const char *
-pem_find_begin (const char *data,
- size_t n_data,
- char **type)
-{
- const char *pref, *suff;
-
- /* Look for a prefix */
- pref = strnstr ((char *)data, ARMOR_PREF_BEGIN, n_data);
- if (!pref)
- return NULL;
-
- n_data -= (pref - data) + ARMOR_PREF_BEGIN_L;
- data = pref + ARMOR_PREF_BEGIN_L;
-
- /* Look for the end of that begin */
- suff = strnstr ((char *)data, ARMOR_SUFF, n_data);
- if (!suff)
- return NULL;
-
- /* Make sure on the same line */
- if (memchr (pref, '\n', suff - pref))
- return NULL;
-
- if (type) {
- pref += ARMOR_PREF_BEGIN_L;
- assert (suff > pref);
- *type = malloc (suff - pref + 1);
- return_val_if_fail (*type != NULL, NULL);
- memcpy (*type, pref, suff - pref);
- (*type)[suff - pref] = 0;
- }
-
- /* The byte after this ---BEGIN--- */
- return suff + ARMOR_SUFF_L;
-}
-
-static const char *
-pem_find_end (const char *data,
- size_t n_data,
- const char *type)
-{
- const char *pref;
- size_t n_type;
-
- /* Look for a prefix */
- pref = strnstr (data, ARMOR_PREF_END, n_data);
- if (!pref)
- return NULL;
-
- n_data -= (pref - data) + ARMOR_PREF_END_L;
- data = pref + ARMOR_PREF_END_L;
-
- /* Next comes the type string */
- n_type = strlen (type);
- if (n_type > n_data || strncmp ((char *)data, type, n_type) != 0)
- return NULL;
-
- n_data -= n_type;
- data += n_type;
-
- /* Next comes the suffix */
- if (ARMOR_SUFF_L > n_data || strncmp ((char *)data, ARMOR_SUFF, ARMOR_SUFF_L) != 0)
- return NULL;
-
- /* The end of the data */
- return pref;
-}
-
-static unsigned char *
-pem_parse_block (const char *data,
- size_t n_data,
- size_t *n_decoded)
-{
- const char *x, *hbeg, *hend;
- const char *p, *end;
- unsigned char *decoded;
- size_t length;
- int ret;
-
- assert (data != NULL);
- assert (n_data != 0);
- assert (n_decoded != NULL);
-
- p = data;
- end = p + n_data;
-
- hbeg = hend = NULL;
-
- /* Try and find a pair of blank lines with only white space between */
- while (hend == NULL) {
- x = memchr (p, '\n', end - p);
- if (!x)
- break;
- ++x;
- while (isspace (*x)) {
- /* Found a second line, with only spaces between */
- if (*x == '\n') {
- hbeg = data;
- hend = x;
- break;
- /* Found a space between two lines */
- } else {
- ++x;
- }
- }
-
- /* Try next line */
- p = x;
- }
-
- /* Headers found? */
- if (hbeg && hend) {
- data = hend;
- n_data = end - data;
- }
-
- length = (n_data * 3) / 4 + 1;
- decoded = malloc (length);
- return_val_if_fail (decoded != NULL, 0);
-
- ret = p11_b64_pton (data, n_data, decoded, length);
- if (ret < 0) {
- free (decoded);
- return NULL;
- }
-
- /* No need to parse headers for our use cases */
-
- *n_decoded = ret;
- return decoded;
-}
-
-unsigned int
-p11_pem_parse (const char *data,
- size_t n_data,
- p11_pem_sink sink,
- void *user_data)
-{
- const char *beg, *end;
- unsigned int nfound = 0;
- unsigned char *decoded = NULL;
- size_t n_decoded = 0;
- char *type;
-
- assert (data != NULL);
-
- while (n_data > 0) {
-
- /* This returns the first character after the PEM BEGIN header */
- beg = pem_find_begin (data, n_data, &type);
- if (beg == NULL)
- break;
-
- assert (type != NULL);
-
- /* This returns the character position before the PEM END header */
- end = pem_find_end (beg, n_data - (beg - data), type);
- if (end == NULL) {
- free (type);
- break;
- }
-
- if (beg != end) {
- decoded = pem_parse_block (beg, end - beg, &n_decoded);
- if (decoded) {
- if (sink != NULL)
- (sink) (type, decoded, n_decoded, user_data);
- ++nfound;
- free (decoded);
- }
- }
-
- free (type);
-
- /* Try for another block */
- end += ARMOR_SUFF_L;
- n_data -= (const char *)end - (const char *)data;
- data = end;
- }
-
- return nfound;
-}
-
-bool
-p11_pem_write (const unsigned char *contents,
- size_t length,
- const char *type,
- p11_buffer *buf)
-{
- size_t estimate;
- size_t prefix;
- char *target;
- int len;
-
- return_val_if_fail (contents || !length, false);
- return_val_if_fail (type, false);
- return_val_if_fail (buf, false);
-
- /* Estimate from base64 data. Algorithm from Glib reference */
- estimate = length * 4 / 3 + 7;
- estimate += estimate / 64 + 1;
-
- p11_buffer_add (buf, ARMOR_PREF_BEGIN, ARMOR_PREF_BEGIN_L);
- p11_buffer_add (buf, type, -1);
- p11_buffer_add (buf, ARMOR_SUFF, ARMOR_SUFF_L);
-
- prefix = buf->len;
- target = p11_buffer_append (buf, estimate);
- return_val_if_fail (target != NULL, NULL);
-
- /*
- * OpenSSL is absolutely certain that it wants its PEM base64
- * lines to be 64 characters in len.
- */
-
- len = p11_b64_ntop (contents, length, target, estimate, 64);
-
- assert (len > 0);
- assert (len <= estimate);
- buf->len = prefix + len;
-
- p11_buffer_add (buf, "\n", 1);
- p11_buffer_add (buf, ARMOR_PREF_END, ARMOR_PREF_END_L);
- p11_buffer_add (buf, type, -1);
- p11_buffer_add (buf, ARMOR_SUFF, ARMOR_SUFF_L);
- p11_buffer_add (buf, "\n", 1);
-
- return p11_buffer_ok (buf);
-}
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