X-Git-Url: https://git.sommitrealweird.co.uk/onak.git/blobdiff_plain/4b8483ae278577a3adc8d84da81d77019704466f..5b3f77c7fbafb036d20a1577ed74f475e94ed821:/armor.c?ds=sidebyside

diff --git a/armor.c b/armor.c
index e41cbad..bb0085e 100644
--- a/armor.c
+++ b/armor.c
@@ -6,11 +6,13 @@
  * Copyright 2002 Project Purple
  */
 
-#include <assert.h>
 #include <stdlib.h>
 
 #include "armor.h"
+#include "config.h"
 #include "keystructs.h"
+#include "log.h"
+#include "onak-conf.h"
 #include "parsekey.h"
 
 #define ARMOR_WIDTH 64
@@ -33,7 +35,7 @@ static unsigned char encode64(unsigned char c) {
 	} else if (c == 63) {
 		c = '/';
 	} else {
-		assert(c < 64);
+		log_assert(c < 64);
 	}
 
 	return c;
@@ -62,21 +64,6 @@ static unsigned char decode64(unsigned char c) {
 	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).
@@ -90,7 +77,7 @@ struct armor_context {
 	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;
 };
 
@@ -104,55 +91,77 @@ static void armor_init(struct armor_context *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);
+	log_assert(ctx != NULL);
 	state = (struct armor_context *) ctx;
 
 	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;
 	}
@@ -168,12 +177,26 @@ static int armor_putchar(void *ctx, unsigned char c)
 	}
 
 	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;
+
+	log_assert(c != NULL);
+
+	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).
@@ -187,7 +210,7 @@ struct dearmor_context {
 	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;
 };
 
@@ -201,16 +224,19 @@ static void dearmor_init(struct dearmor_context *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));
+	*/
 }
 
 
@@ -220,13 +246,13 @@ 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;
 	
 	tmpc = 65;
 	while (tmpc == 65) {
-		state->getchar_func(state->ctx, &tmpc);
+		state->getchar_func(state->ctx, 1, &tmpc);
 		tmpc = decode64(tmpc);
 	}
 
@@ -236,7 +262,7 @@ static int dearmor_getchar(void *ctx, unsigned char *c)
 			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);
@@ -285,18 +311,20 @@ static int dearmor_getchar_c(void *ctx, size_t count, unsigned char *c)
  *	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 " PACKAGE_VERSION "\n\n") - 1,
+		(unsigned char *) "Version: onak " PACKAGE_VERSION "\n\n");
 	
 	armor_init(&armor_ctx);
 	armor_ctx.putchar_func = putchar_func;
@@ -307,7 +335,8 @@ int armor_openpgp_stream(int (*putchar_func)(void *ctx, unsigned char c),
 	/*
 	 * 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;
 }
@@ -322,7 +351,8 @@ int armor_openpgp_stream(int (*putchar_func)(void *ctx, unsigned char c),
  *	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)
 {
@@ -336,7 +366,7 @@ int dearmor_openpgp_stream(int (*getchar_func)(void *ctx, unsigned char *c),
 	 * 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') {
@@ -350,7 +380,7 @@ int dearmor_openpgp_stream(int (*getchar_func)(void *ctx, unsigned char *c),
 					if (count == 5) {
 						state = 2;
 					}
-				} else {
+				} else if (curchar != '\n') {
 					state = 0;
 				}
 				break;
@@ -368,19 +398,24 @@ int dearmor_openpgp_stream(int (*getchar_func)(void *ctx, unsigned char *c),
 					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;
 }