Add checking for signature hashes

[onak.git] / armor.c

diff --git a/armor.c b/armor.c
index 3f47f64f01637a46b14390a658f557e71a555ea6..a730acd83bbfd1b2a8ed994b3fa1c7d6fd107c52 100644 (file)
--- a/armor.c
+++ b/armor.c
@@ -1,20 +1,30 @@
 /*
  * armor.c - Routines to (de)armor OpenPGP packet streams.
  *
- * Jonathan McDowell <noodles@earth.li>
+ * Copyright 2002-2004, 2011 Jonathan McDowell <noodles@earth.li>
  *
- * Copyright 2002 Project Purple
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; version 2 of the License.
  *
- * $Id: armor.c,v 1.6 2003/06/07 13:45:34 noodles Exp $
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
-#include <assert.h>
 #include <stdlib.h>
 
 #include "armor.h"
 #include "keystructs.h"
+#include "log.h"
 #include "onak-conf.h"
 #include "parsekey.h"
+#include "version.h"
 
 #define ARMOR_WIDTH 64
 
@@ -36,7 +46,7 @@ static unsigned char encode64(unsigned char c) {
        } else if (c == 63) {
                c = '/';
        } else {
-               assert(c < 64);
+               log_assert(c < 64);
        }
 
        return c;
@@ -78,7 +88,7 @@ struct armor_context {
        int curoctet;
        int count;
        long crc24;
-       int (*putchar_func)(void *ctx, size_t count, unsigned char *c);
+       int (*putchar_func)(void *ctx, size_t count, void *c);
        void *ctx;
 };
 
@@ -102,16 +112,28 @@ static void armor_finish(struct armor_context *state)
                state->putchar_func(state->ctx, 1, &c);
                state->putchar_func(state->ctx, 1, (unsigned char *) "=");
                state->putchar_func(state->ctx, 1, (unsigned char *) "=");
+               state->count += 3;
+               if ((state->count % ARMOR_WIDTH) == 0) {
+                       state->putchar_func(state->ctx, 1,
+                                (unsigned char *) "\n");
+               }
                break;
        case 2:
                c = encode64((state->lastoctet & 0xF) << 2);
                state->putchar_func(state->ctx, 1, &c);
                state->putchar_func(state->ctx, 1, (unsigned char *) "=");
+               state->count += 2;
+               if ((state->count % ARMOR_WIDTH) == 0) {
+                       state->putchar_func(state->ctx, 1,
+                                (unsigned char *) "\n");
+               }
                break;
        }
 
        state->crc24 &= 0xffffffL;
-       state->putchar_func(state->ctx, 1, (unsigned char *) "\n");
+       if ((state->count % ARMOR_WIDTH) != 0) {
+               state->putchar_func(state->ctx, 1, (unsigned char *) "\n");
+       }
        state->putchar_func(state->ctx, 1, (unsigned char *) "=");
        c = encode64(state->crc24 >> 18);
        state->putchar_func(state->ctx, 1, &c);
@@ -132,7 +154,7 @@ static int armor_putchar_int(void *ctx, unsigned char c)
        unsigned char t;
        int i;
 
-       assert(ctx != NULL);
+       log_assert(ctx != NULL);
        state = (struct armor_context *) ctx;
 
        switch (state->curoctet++) {
@@ -173,12 +195,14 @@ static int armor_putchar_int(void *ctx, unsigned char c)
 }
 
 
-static int armor_putchar(void *ctx, size_t count, unsigned char *c)
+static int armor_putchar(void *ctx, size_t count, void *c)
 {
        int i;
 
+       log_assert(c != NULL);
+
        for (i = 0; i < count; i++) {
-               armor_putchar_int(ctx, c[i]);
+               armor_putchar_int(ctx, ((char *) c)[i]);
        }
        
        return 0;
@@ -197,7 +221,7 @@ struct dearmor_context {
        int curoctet;
        int count;
        long crc24;
-       int (*getchar_func)(void *ctx, size_t count, unsigned char *c);
+       int (*getchar_func)(void *ctx, size_t count, void *c);
        void *ctx;
 };
 
@@ -233,7 +257,7 @@ static int dearmor_getchar(void *ctx, unsigned char *c)
        unsigned char tmpc;
        int i;
 
-       assert(ctx != NULL);
+       log_assert(ctx != NULL);
        state = (struct dearmor_context *) ctx;
        *c = 0;
        
@@ -278,12 +302,12 @@ static int dearmor_getchar(void *ctx, unsigned char *c)
        return (tmpc == 64);
 }
 
-static int dearmor_getchar_c(void *ctx, size_t count, unsigned char *c)
+static int dearmor_getchar_c(void *ctx, size_t count, void *c)
 {
        int i, rc = 0;
 
        for (i = 0; i < count && rc == 0; i++) {
-               rc = dearmor_getchar(ctx, &c[i]);
+               rc = dearmor_getchar(ctx, &((unsigned char *) c)[i]);
        }
 
        return rc;
@@ -299,7 +323,7 @@ static int dearmor_getchar_c(void *ctx, size_t count, unsigned char *c)
  *     using putchar_func.
  */
 int armor_openpgp_stream(int (*putchar_func)(void *ctx, size_t count,
-                                               unsigned char *c),
+                                               void *c),
                                void *ctx,
                                struct openpgp_packet_list *packets)
 {
@@ -310,8 +334,8 @@ int armor_openpgp_stream(int (*putchar_func)(void *ctx, size_t count,
         */
        putchar_func(ctx, sizeof("-----BEGIN PGP PUBLIC KEY BLOCK-----\n") - 1,
                (unsigned char *) "-----BEGIN PGP PUBLIC KEY BLOCK-----\n");
-       putchar_func(ctx, sizeof("Version: onak " VERSION "\n\n") - 1,
-               (unsigned char *) "Version: onak " VERSION "\n\n");
+       putchar_func(ctx, sizeof("Version: onak " ONAK_VERSION "\n\n") - 1,
+               (unsigned char *) "Version: onak " ONAK_VERSION "\n\n");
        
        armor_init(&armor_ctx);
        armor_ctx.putchar_func = putchar_func;
@@ -339,7 +363,7 @@ int armor_openpgp_stream(int (*putchar_func)(void *ctx, size_t count,
  *     packets.
  */
 int dearmor_openpgp_stream(int (*getchar_func)(void *ctx, size_t count,
-                                               unsigned char *c),
+                                               void *c),
                                void *ctx,
                                struct openpgp_packet_list **packets)
 {
@@ -396,7 +420,8 @@ int dearmor_openpgp_stream(int (*getchar_func)(void *ctx, size_t count,
                dearmor_init(&dearmor_ctx);
                dearmor_ctx.getchar_func = getchar_func;
                dearmor_ctx.ctx = ctx;
-               read_openpgp_stream(dearmor_getchar_c, &dearmor_ctx, packets);
+               read_openpgp_stream(dearmor_getchar_c, &dearmor_ctx,
+                       packets, 0);
                dearmor_finish(&dearmor_ctx);
                /*
                 * TODO: Look for armor footer