* Jonathan McDowell <noodles@earth.li>
*
* Copyright 2002 Project Purple
+ *
+ * $Id: armor.c,v 1.8 2003/11/01 19:23:38 noodles Exp $
*/
#include <assert.h>
#include "armor.h"
#include "keystructs.h"
+#include "onak-conf.h"
#include "parsekey.h"
#define ARMOR_WIDTH 64
return c;
}
-
-void putstring(int (*putchar_func)(void *ctx, unsigned char c),
- void *ctx,
- const char *string)
-{
- int i;
-
- assert(putchar_func != NULL);
- assert(string != NULL);
-
- for (i = 0; string[i] != 0; i++) {
- putchar_func(ctx, string[i]);
- }
-}
-
/**
* @lastoctet: The last octet we got.
* @curoctet: The current octet we're expecting (0, 1 or 2).
int curoctet;
int count;
long crc24;
- int (*putchar_func)(void *ctx, unsigned char c);
+ int (*putchar_func)(void *ctx, size_t count, unsigned char *c);
void *ctx;
};
static void armor_finish(struct armor_context *state)
{
+ unsigned char c;
+
switch (state->curoctet++) {
case 0:
break;
case 1:
- state->putchar_func(state->ctx,
- encode64((state->lastoctet & 3) << 4));
- state->putchar_func(state->ctx, '=');
- state->putchar_func(state->ctx, '=');
+ c = encode64((state->lastoctet & 3) << 4);
+ 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:
- state->putchar_func(state->ctx,
- encode64((state->lastoctet & 0xF) << 2));
- state->putchar_func(state->ctx, '=');
+ 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, '\n');
- state->putchar_func(state->ctx, '=');
- state->putchar_func(state->ctx, encode64(state->crc24 >> 18));
- state->putchar_func(state->ctx, encode64((state->crc24 >> 12) & 0x3F));
- state->putchar_func(state->ctx, encode64((state->crc24 >> 6) & 0x3F));
- state->putchar_func(state->ctx, encode64(state->crc24 & 0x3F));
- state->putchar_func(state->ctx, '\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);
+ c = encode64((state->crc24 >> 12) & 0x3F);
+ state->putchar_func(state->ctx, 1, &c);
+ c = encode64((state->crc24 >> 6) & 0x3F);
+ state->putchar_func(state->ctx, 1, &c);
+ c = encode64(state->crc24 & 0x3F);
+ state->putchar_func(state->ctx, 1, &c);
+ state->putchar_func(state->ctx, 1, (unsigned char *) "\n");
}
-static int armor_putchar(void *ctx, unsigned char c)
+
+static int armor_putchar_int(void *ctx, unsigned char c)
{
struct armor_context *state;
+ unsigned char t;
int i;
assert(ctx != NULL);
switch (state->curoctet++) {
case 0:
- state->putchar_func(state->ctx, encode64(c >> 2));
+ t = encode64(c >> 2);
+ state->putchar_func(state->ctx, 1, &t);
state->count++;
break;
case 1:
- state->putchar_func(state->ctx,
- encode64(((state->lastoctet & 3) << 4) + (c >> 4)));
+ t = encode64(((state->lastoctet & 3) << 4) + (c >> 4));
+ state->putchar_func(state->ctx, 1, &t);
state->count++;
break;
case 2:
- state->putchar_func(state->ctx,
- encode64(((state->lastoctet & 0xF) << 2) + (c >> 6)));
- state->putchar_func(state->ctx, encode64(c & 0x3F));
+ t = encode64(((state->lastoctet & 0xF) << 2) + (c >> 6));
+ state->putchar_func(state->ctx, 1, &t);
+ t = encode64(c & 0x3F);
+ state->putchar_func(state->ctx, 1, &t);
state->count += 2;
break;
}
}
if ((state->count % ARMOR_WIDTH) == 0) {
- state->putchar_func(state->ctx, '\n');
+ state->putchar_func(state->ctx, 1, (unsigned char *) "\n");
}
return 0;
}
+
+static int armor_putchar(void *ctx, size_t count, unsigned char *c)
+{
+ int i;
+
+ for (i = 0; i < count; i++) {
+ armor_putchar_int(ctx, c[i]);
+ }
+
+ return 0;
+}
+
/**
* @lastoctet: The last octet we got.
* @curoctet: The current octet we're expecting (0, 1 or 2).
int curoctet;
int count;
long crc24;
- int (*getchar_func)(void *ctx, unsigned char *c);
+ int (*getchar_func)(void *ctx, size_t count, unsigned char *c);
void *ctx;
};
static void dearmor_finish(struct dearmor_context *state)
{
- // Check the checksum,
+ /*
+ * Check the checksum
+ */
state->crc24 &= 0xffffffL;
-// state->putchar_func(state->ctx, '\n');
-// state->putchar_func(state->ctx, '=');
-// state->putchar_func(state->ctx, encode64(state->crc24 >> 18));
-// state->putchar_func(state->ctx, encode64((state->crc24 >> 12) & 0x3F));
-// state->putchar_func(state->ctx, encode64((state->crc24 >> 6) & 0x3F));
-// state->putchar_func(state->ctx, encode64(state->crc24 & 0x3F));
-
+ /*
+ state->putchar_func(state->ctx, '\n');
+ state->putchar_func(state->ctx, '=');
+ state->putchar_func(state->ctx, encode64(state->crc24 >> 18));
+ state->putchar_func(state->ctx, encode64((state->crc24 >> 12) & 0x3F));
+ state->putchar_func(state->ctx, encode64((state->crc24 >> 6) & 0x3F));
+ state->putchar_func(state->ctx, encode64(state->crc24 & 0x3F));
+ */
}
tmpc = 65;
while (tmpc == 65) {
- state->getchar_func(state->ctx, &tmpc);
+ state->getchar_func(state->ctx, 1, &tmpc);
tmpc = decode64(tmpc);
}
state->lastoctet = tmpc;
tmpc = 65;
while (tmpc == 65) {
- state->getchar_func(state->ctx, &tmpc);
+ state->getchar_func(state->ctx, 1, &tmpc);
tmpc = decode64(tmpc);
}
*c = (state->lastoctet << 2) + (tmpc >> 4);
* This function ASCII armors a list of OpenPGP packets and outputs it
* using putchar_func.
*/
-int armor_openpgp_stream(int (*putchar_func)(void *ctx, unsigned char c),
+int armor_openpgp_stream(int (*putchar_func)(void *ctx, size_t count,
+ unsigned char *c),
void *ctx,
struct openpgp_packet_list *packets)
{
struct armor_context armor_ctx;
-
/*
* Print armor header
*/
- putstring(putchar_func, ctx, "-----BEGIN PGP PUBLIC KEY BLOCK-----\n");
- putstring(putchar_func, ctx, "Version: onak 0.0.1\n\n");
+ 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");
armor_init(&armor_ctx);
armor_ctx.putchar_func = putchar_func;
/*
* Print armor footer
*/
- putstring(putchar_func, ctx, "-----END PGP PUBLIC KEY BLOCK-----\n");
+ putchar_func(ctx, sizeof("-----END PGP PUBLIC KEY BLOCK-----\n") - 1,
+ (unsigned char *) "-----END PGP PUBLIC KEY BLOCK-----\n");
return 0;
}
* armored OpenPGP stream and outputs the data as a linked list of
* packets.
*/
-int dearmor_openpgp_stream(int (*getchar_func)(void *ctx, unsigned char *c),
+int dearmor_openpgp_stream(int (*getchar_func)(void *ctx, size_t count,
+ unsigned char *c),
void *ctx,
struct openpgp_packet_list **packets)
{
* with :s in them, then a blank line, then the data.
*/
state = 1;
- while (state != 4 && !getchar_func(ctx, &curchar)) {
+ while (state != 4 && !getchar_func(ctx, 1, &curchar)) {
switch (state) {
case 0:
if (curchar == '\n') {
if (count == 5) {
state = 2;
}
- } else {
+ } else if (curchar != '\n') {
state = 0;
}
break;
if (count == 2) {
state = 4;
}
- } else {
+ } else if (curchar != '\r') {
count = 0;
}
break;
}
}
- dearmor_init(&dearmor_ctx);
- dearmor_ctx.getchar_func = getchar_func;
- dearmor_ctx.ctx = ctx;
- read_openpgp_stream(dearmor_getchar_c, &dearmor_ctx, packets);
- dearmor_finish(&dearmor_ctx);
- // TODO: Look for armor footer
+ if (state == 4) {
+ dearmor_init(&dearmor_ctx);
+ dearmor_ctx.getchar_func = getchar_func;
+ dearmor_ctx.ctx = ctx;
+ read_openpgp_stream(dearmor_getchar_c, &dearmor_ctx,
+ packets, 0);
+ dearmor_finish(&dearmor_ctx);
+ /*
+ * TODO: Look for armor footer
+ */
+ }
return 0;
}