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authorMichał Cichoń <michcic@gmail.com>2015-08-25 06:45:41 +0200
committerMichał Cichoń <michcic@gmail.com>2015-08-25 06:45:41 +0200
commita3bae55d41f5159df3a0125f02a8fa322e81bbe3 (patch)
tree06163f5e15a4902428ece78fb278e3f5429f697b /src/libpiano
parent34b6068d229efcb934fa40b5f4d47a46cedae552 (diff)
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libpiano: Abstract out blowfish cipher to PianoCipher_t so different implementations than gcrypt can be used.
Diffstat (limited to 'src/libpiano')
-rw-r--r--src/libpiano/crypt.c55
-rw-r--r--src/libpiano/crypt.h13
-rw-r--r--src/libpiano/piano.c33
-rw-r--r--src/libpiano/piano.h11
-rw-r--r--src/libpiano/request.c6
-rw-r--r--src/libpiano/response.c4
6 files changed, 75 insertions, 47 deletions
diff --git a/src/libpiano/crypt.c b/src/libpiano/crypt.c
index 8886f17..e203812 100644
--- a/src/libpiano/crypt.c
+++ b/src/libpiano/crypt.c
@@ -29,17 +29,50 @@ THE SOFTWARE.
#include "crypt.h"
+#include <blowfish.h>
+
+struct _PianoCipher_t {
+ BLOWFISH_CTX cipher;
+};
+
+PianoReturn_t PianoCryptInit (PianoCipher_t* h, const char * const key,
+ size_t const size) {
+ PianoCipher_t result = malloc (sizeof(BLOWFISH_CTX));
+ if (result == NULL) {
+ return PIANO_RET_OUT_OF_MEMORY;
+ }
+
+ Blowfish_Init (&result->cipher, (unsigned char*)key, size);
+
+ *h = result;
+
+ return PIANO_RET_OK;
+}
+
+void PianoCryptDestroy (PianoCipher_t h) {
+ free(h);
+}
+
+static inline bool PianoCryptDecrypt (PianoCipher_t h, unsigned char* output, size_t size) {
+ return Blowfish_DecryptData (&h->cipher, (uint32_t*)output, (uint32_t*)output, size) == BLOWFISH_OK;
+}
+
+static inline bool PianoCryptEncrypt (PianoCipher_t h, unsigned char* output, size_t size)
+{
+ return Blowfish_EncryptData (&h->cipher, (uint32_t*)output, (uint32_t*)output, size) == BLOWFISH_OK;
+}
+
/* decrypt hex-encoded, blowfish-crypted string: decode 2 hex-encoded blocks,
* decrypt, byteswap
- * @param gcrypt handle
+ * @param cipher handle
* @param hex string
* @param decrypted string length (without trailing NUL)
* @return decrypted string or NULL
*/
-char *PianoDecryptString (gcry_cipher_hd_t h, const char * const input,
+char *PianoDecryptString (PianoCipher_t h, const char * const input,
size_t * const retSize) {
size_t inputLen = strlen (input);
- gcry_error_t gret;
+ bool ret;
unsigned char *output;
size_t outputLen = inputLen/2;
@@ -51,11 +84,11 @@ char *PianoDecryptString (gcry_cipher_hd_t h, const char * const input,
char hex[3];
memcpy (hex, &input[i*2], 2);
hex[2] = '\0';
- output[i] = strtol (hex, NULL, 16);
+ output[i] = (unsigned char) strtol (hex, NULL, 16);
}
- gret = gcry_cipher_decrypt (h, output, outputLen, NULL, 0);
- if (gret) {
+ ret = PianoCryptDecrypt (h, output, outputLen);
+ if (!ret) {
free (output);
return NULL;
}
@@ -66,22 +99,22 @@ char *PianoDecryptString (gcry_cipher_hd_t h, const char * const input,
}
/* blowfish-encrypt/hex-encode string
- * @param gcrypt handle
+ * @param cipher handle
* @param encrypt this
* @return encrypted, hex-encoded string
*/
-char *PianoEncryptString (gcry_cipher_hd_t h, const char *s) {
+char *PianoEncryptString (PianoCipher_t h, const char *s) {
unsigned char *paddedInput, *hexOutput;
size_t inputLen = strlen (s);
/* blowfish expects two 32 bit blocks */
size_t paddedInputLen = (inputLen % 8 == 0) ? inputLen : inputLen + (8-inputLen%8);
- gcry_error_t gret;
+ bool ret;
paddedInput = calloc (paddedInputLen+1, sizeof (*paddedInput));
memcpy (paddedInput, s, inputLen);
- gret = gcry_cipher_encrypt (h, paddedInput, paddedInputLen, NULL, 0);
- if (gret) {
+ ret = PianoCryptEncrypt (h, paddedInput, paddedInputLen);
+ if (!ret) {
free (paddedInput);
return NULL;
}
diff --git a/src/libpiano/crypt.h b/src/libpiano/crypt.h
index fc7c205..890b8c1 100644
--- a/src/libpiano/crypt.h
+++ b/src/libpiano/crypt.h
@@ -24,13 +24,14 @@ THE SOFTWARE.
#ifndef SRC_LIBPIANO_CRYPT_H_O832IVGK
#define SRC_LIBPIANO_CRYPT_H_O832IVGK
-#ifdef __FreeBSD__
-#define _GCRYPT_IN_LIBGCRYPT
-#endif
-#include <gcrypt.h>
+#include "piano.h"
-char *PianoDecryptString (gcry_cipher_hd_t, const char * const,
+PianoReturn_t PianoCryptInit (PianoCipher_t*, const char * const,
+ size_t const);
+void PianoCryptDestroy (PianoCipher_t);
+
+char *PianoDecryptString (PianoCipher_t, const char * const,
size_t * const);
-char *PianoEncryptString (gcry_cipher_hd_t, const char *);
+char *PianoEncryptString (PianoCipher_t, const char *);
#endif /* SRC_LIBPIANO_CRYPT_H_O832IVGK */
diff --git a/src/libpiano/piano.c b/src/libpiano/piano.c
index 72502f7..c496ea1 100644
--- a/src/libpiano/piano.c
+++ b/src/libpiano/piano.c
@@ -31,6 +31,7 @@ THE SOFTWARE.
#include "piano_private.h"
#include "piano.h"
+#include "crypt.h"
/* initialize piano handle
* @param piano handle
@@ -39,30 +40,24 @@ THE SOFTWARE.
PianoReturn_t PianoInit (PianoHandle_t *ph, const char *partnerUser,
const char *partnerPassword, const char *device, const char *inkey,
const char *outkey) {
+ PianoReturn_t ret = PIANO_RET_OK;
+
memset (ph, 0, sizeof (*ph));
ph->partner.user = strdup (partnerUser);
ph->partner.password = strdup (partnerPassword);
ph->partner.device = strdup (device);
- if (gcry_cipher_open (&ph->partner.in, GCRY_CIPHER_BLOWFISH,
- GCRY_CIPHER_MODE_ECB, 0) != GPG_ERR_NO_ERROR) {
- return PIANO_RET_GCRY_ERR;
- }
- if (gcry_cipher_setkey (ph->partner.in, (const unsigned char *) inkey,
- strlen (inkey)) != GPG_ERR_NO_ERROR) {
- return PIANO_RET_GCRY_ERR;
+ ret = PianoCryptInit (&ph->partner.in, inkey, strlen (inkey));
+ if (ret != PIANO_RET_OK) {
+ return ret;
}
- if (gcry_cipher_open (&ph->partner.out, GCRY_CIPHER_BLOWFISH,
- GCRY_CIPHER_MODE_ECB, 0) != GPG_ERR_NO_ERROR) {
- return PIANO_RET_GCRY_ERR;
- }
- if (gcry_cipher_setkey (ph->partner.out, (const unsigned char *) outkey,
- strlen (outkey)) != GPG_ERR_NO_ERROR) {
- return PIANO_RET_GCRY_ERR;
+ ret = PianoCryptInit (&ph->partner.out, outkey, strlen(outkey));
+ if (ret != PIANO_RET_OK) {
+ return ret;
}
- return PIANO_RET_OK;
+ return ret;
}
/* destroy artist linked list
@@ -178,8 +173,8 @@ static void PianoDestroyPartner (PianoPartner_t *partner) {
free (partner->password);
free (partner->device);
free (partner->authToken);
- gcry_cipher_close (partner->in);
- gcry_cipher_close (partner->out);
+ PianoCryptDestroy (partner->in);
+ PianoCryptDestroy (partner->out);
memset (partner, 0, sizeof (*partner));
}
@@ -267,8 +262,8 @@ const char *PianoErrorToStr (PianoReturn_t ret) {
return "Selected audio quality is not available.";
break;
- case PIANO_RET_GCRY_ERR:
- return "libgcrypt initialization failed.";
+ case PIANO_RET_CIPHER_ERR:
+ return "Cipher initialization failed.";
break;
/* pandora error messages */
diff --git a/src/libpiano/piano.h b/src/libpiano/piano.h
index 1a84d4a..ca33626 100644
--- a/src/libpiano/piano.h
+++ b/src/libpiano/piano.h
@@ -26,11 +26,8 @@ THE SOFTWARE.
#include "../config.h"
+#include <stdlib.h>
#include <stdbool.h>
-#ifdef __FreeBSD__
-#define _GCRYPT_IN_LIBGCRYPT
-#endif
-#include <gcrypt.h>
/* this is our public API; don't expect this api to be stable as long as
* pandora does not provide a stable api
@@ -44,6 +41,8 @@ THE SOFTWARE.
#define PIANO_RPC_HOST "tuner.pandora.com"
#define PIANO_RPC_PATH "/services/json/?"
+typedef struct _PianoCipher_t* PianoCipher_t;
+
typedef struct PianoListHead {
struct PianoListHead *next;
} PianoListHead_t;
@@ -124,7 +123,7 @@ typedef struct PianoGenreCategory {
} PianoGenreCategory_t;
typedef struct PianoPartner {
- gcry_cipher_hd_t in, out;
+ PianoCipher_t in, out;
char *authToken, *device, *user, *password;
unsigned int id;
} PianoPartner_t;
@@ -276,7 +275,7 @@ typedef enum {
PIANO_RET_OUT_OF_MEMORY = 4,
PIANO_RET_INVALID_LOGIN = 5,
PIANO_RET_QUALITY_UNAVAILABLE = 6,
- PIANO_RET_GCRY_ERR = 7,
+ PIANO_RET_CIPHER_ERR = 7,
/* pandora error codes */
PIANO_RET_P_INTERNAL = PIANO_RET_OFFSET+0,
diff --git a/src/libpiano/request.c b/src/libpiano/request.c
index 02b4b43..a97abb5 100644
--- a/src/libpiano/request.c
+++ b/src/libpiano/request.c
@@ -24,7 +24,7 @@ THE SOFTWARE.
#include "../config.h"
#include <curl/curl.h>
-#include <json.h>
+#include <json/json.h>
#include <assert.h>
#include <stdio.h>
#include <string.h>
@@ -94,7 +94,7 @@ PianoReturn_t PianoRequest (PianoHandle_t *ph, PianoRequest_t *req,
json_object_object_add (j, "partnerAuthToken",
json_object_new_string (ph->partner.authToken));
json_object_object_add (j, "syncTime",
- json_object_new_int (timestamp));
+ json_object_new_int64 (timestamp));
CURL * const curl = curl_easy_init ();
urlencAuthToken = curl_easy_escape (curl,
@@ -487,7 +487,7 @@ PianoReturn_t PianoRequest (PianoHandle_t *ph, PianoRequest_t *req,
json_object_object_add (j, "userAuthToken",
json_object_new_string (ph->user.authToken));
json_object_object_add (j, "syncTime",
- json_object_new_int (timestamp));
+ json_object_new_int64 (timestamp));
}
/* json to string */
diff --git a/src/libpiano/response.c b/src/libpiano/response.c
index 7f0cee0..783e2f0 100644
--- a/src/libpiano/response.c
+++ b/src/libpiano/response.c
@@ -23,7 +23,7 @@ THE SOFTWARE.
#include "../config.h"
-#include <json.h>
+#include <json/json.h>
#include <string.h>
#include <assert.h>
#include <time.h>
@@ -273,7 +273,7 @@ PianoReturn_t PianoResponse (PianoHandle_t *ph, PianoRequest_t *req) {
song->stationId = PianoJsonStrdup (s, "stationId");
song->coverArt = PianoJsonStrdup (s, "albumArtUrl");
song->detailUrl = PianoJsonStrdup (s, "songDetailUrl");
- song->fileGain = json_object_get_double (
+ song->fileGain = (float)json_object_get_double (
json_object_object_get (s, "trackGain"));
song->length = json_object_get_int (
json_object_object_get (s, "trackLength"));