Print size_t variables on properly on Windows

OpenSC used SUSv3 "z" printf length modifier for printing size_t variables,
however this modifier is not available on Windows ("I" must be used
instead), at least for now.

Introduce SC_FORMAT_LEN_SIZE_T define for that purpose and convert existing
code to use it when printing size_t variables.

This define can't go into libopensc/internal.h since tools use it, too.

Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>

src/libopensc/card-piv.c

@@ -1676,8 +1676,9 @@ static int piv_general_mutual_authenticate(sc_card_t *card,
 	plain_text_len += tmplen;
 
 	if (plain_text_len != witness_len) {
-		sc_debug(card->ctx, SC_LOG_DEBUG_VERBOSE, "Encrypted and decrypted lengths do not match: %zu:%zu\n",
-				witness_len, plain_text_len);
+		sc_debug(card->ctx, SC_LOG_DEBUG_VERBOSE,
+			 "Encrypted and decrypted lengths do not match: %"SC_FORMAT_LEN_SIZE_T"u:%"SC_FORMAT_LEN_SIZE_T"u\n",
+			 witness_len, plain_text_len);
 		r = SC_ERROR_INTERNAL;
 		goto err;
 	}
@@ -1801,8 +1802,9 @@ static int piv_general_mutual_authenticate(sc_card_t *card,
 	decrypted_reponse_len += tmplen;
 
 	if (decrypted_reponse_len != nonce_len || memcmp(nonce, decrypted_reponse, nonce_len) != 0) {
-		sc_log(card->ctx, "mutual authentication failed, card returned wrong value %zu:%zu",
-				decrypted_reponse_len, nonce_len);
+		sc_log(card->ctx,
+		       "mutual authentication failed, card returned wrong value %"SC_FORMAT_LEN_SIZE_T"u:%"SC_FORMAT_LEN_SIZE_T"u",
+		       decrypted_reponse_len, nonce_len);
 		r = SC_ERROR_DECRYPT_FAILED;
 		goto err;
 	}
@@ -2005,7 +2007,7 @@ static int piv_general_external_authenticate(sc_card_t *card,
 	/* Sanity check the lengths again */
 	if(output_len != (size_t)tmplen) {
 		sc_debug(card->ctx, SC_LOG_DEBUG_VERBOSE, "Allocated and computed lengths do not match! "
-				"Expected %zd, found: %d\n", output_len, tmplen);
+			 "Expected %"SC_FORMAT_LEN_SIZE_T"d, found: %d\n", output_len, tmplen);
 		r = SC_ERROR_INTERNAL;
 		goto err;
 	}

src/libopensc/opensc.h

@@ -44,6 +44,12 @@ extern "C" {
 #include "libopensc/sm.h"
 #endif
 
+#if defined(_WIN32)
+#define SC_FORMAT_LEN_SIZE_T "I"
+#else
+/* hope SUSv3 one works */
+#define SC_FORMAT_LEN_SIZE_T "z"
+#endif
 
 #define SC_SEC_OPERATION_DECIPHER	0x0001
 #define SC_SEC_OPERATION_SIGN		0x0002

src/tools/cardos-tool.c

@@ -396,8 +396,8 @@ static int cardos_sm4h(const unsigned char *in, size_t inlen, unsigned char
 	unsigned int i,j;
 
 	if (keylen != 16) {
-		printf("key has wrong size, need 16 bytes, got %zd. aborting.\n",
-			keylen);
+		printf("key has wrong size, need 16 bytes, got %"SC_FORMAT_LEN_SIZE_T"d. aborting.\n",
+		       keylen);
 		return 0;
 	}
 
@@ -593,7 +593,8 @@ static int cardos_format(const char *opt_startkey)
 	if (check_apdu(&apdu))
 		return 1;
 	if (apdu.resplen < 0x04) {
-		printf("expected 4-6 bytes form GET DATA for startkey data, but got only %zu\n", apdu.resplen);
+		printf("expected 4-6 bytes form GET DATA for startkey data, but got only %"SC_FORMAT_LEN_SIZE_T"u\n",
+		       apdu.resplen);
 		printf("aborting\n");
 		return 1;
 	}
@@ -914,7 +915,8 @@ static int cardos_change_startkey(const char *change_startkey_apdu)
 	if (check_apdu(&apdu))
 		return 1;
 	if (apdu.resplen < 0x04) {
-		printf("expected 4-6 bytes form GET DATA for startkey data, but got only %zu\n", apdu.resplen);
+		printf("expected 4-6 bytes form GET DATA for startkey data, but got only %"SC_FORMAT_LEN_SIZE_T"u\n",
+		       apdu.resplen);
 		printf("aborting\n");
 		return 1;
 	}
@@ -999,7 +1001,8 @@ change_startkey:
 	if (check_apdu(&apdu))
 		return 1;
 	if (apdu.resplen < 0x04) {
-		printf("expected 4-6 bytes form GET DATA for startkey data, but got only %zu\n", apdu.resplen);
+		printf("expected 4-6 bytes form GET DATA for startkey data, but got only %"SC_FORMAT_LEN_SIZE_T"u\n",
+		       apdu.resplen);
 		printf("aborting\n");
 		return 1;
 	}

src/tools/gids-tool.c

@@ -385,12 +385,7 @@ static int print_info(sc_card_t *card) {
 				if (r < 0) {
 					printf("      unable to read the file: %s\n", sc_strerror(r));
 				} else {
-#ifdef _WIN32
-					// visual studio doesn't support %zu
-					printf("      Size: %Iu\n", size);
-#else
-					printf("      Size: %zu\n", size);
-#endif
+					printf("      Size: %"SC_FORMAT_LEN_SIZE_T"u\n", size);
 				}
 				printf("\n");
 				if (strcmp(records[i].directory, "mscp") == 0 && strcmp(records[i].filename, "cmapfile") == 0 ) {

src/tools/openpgp-tool.c

@@ -365,7 +365,8 @@ static int do_userinfo(sc_card_t *card)
 			return EXIT_FAILURE;
 		}
 		if (r != (signed)count) {
-			fprintf(stderr, "%s: expecting %zd, got only %d bytes\n", openpgp_data[i].ef, count, r);
+			fprintf(stderr, "%s: expecting %"SC_FORMAT_LEN_SIZE_T"d, got only %d bytes\n",
+				openpgp_data[i].ef, count, r);
 			return EXIT_FAILURE;
 		}
 

src/tools/westcos-tool.c

@@ -656,8 +656,9 @@ int main(int argc, char *argv[])
 
 			file->path = path;
 
-			printf("File key creation %s, size %zd.\n", file->path.value,
-				file->size);
+			printf("File key creation %s, size %"SC_FORMAT_LEN_SIZE_T"d.\n",
+			       file->path.value,
+			       file->size);
 
 			r = sc_create_file(card, file);
 			if(r) goto out;
@@ -672,7 +673,7 @@ int main(int argc, char *argv[])
 			}
 		}
 
-		printf("Private key length is %zd\n", lg);
+		printf("Private key length is %"SC_FORMAT_LEN_SIZE_T"d\n", lg);
 
 		printf("Write private key.\n");
 		r = sc_update_binary(card,0,pdata,lg,0);
@@ -696,7 +697,7 @@ int main(int argc, char *argv[])
 		r = sc_pkcs15_encode_pubkey(ctx, &key, &pdata, &lg);
 		if(r) goto out;
 
-		printf("Public key length %zd\n", lg);
+		printf("Public key length %"SC_FORMAT_LEN_SIZE_T"d\n", lg);
 
 		sc_format_path("3F000002", &path);
 		r = sc_select_file(card, &path, NULL);