api: add function crypto_hash_file

src/plugins/plugin-api.c

@@ -127,6 +127,36 @@ plugin_api_crypto_hash (const void *data, int data_size, const char *hash_algo,
     return weecrypto_hash (data, data_size, algo, hash, hash_size);
 }
 
+/*
+ * Computes hash of a file using the given algorithm.
+ *
+ * Returns:
+ *   1: OK
+ *   0: error
+ */
+
+int
+plugin_api_crypto_hash_file (const char *filename, const char *hash_algo,
+                             void *hash, int *hash_size)
+{
+    int algo;
+
+    if (!hash)
+        return 0;
+
+    if (hash_size)
+        *hash_size = 0;
+
+    if (!filename || !filename[0] || !hash_algo)
+        return 0;
+
+    algo = weecrypto_get_hash_algo (hash_algo);
+    if (algo == GCRY_MD_NONE)
+        return 0;
+
+    return weecrypto_hash_file (filename, algo, hash, hash_size);
+}
+
 /*
  * Computes PKCS#5 Passphrase Based Key Derivation Function number 2 (PBKDF2)
  * hash of data.

src/plugins/plugin-api.h

@@ -33,6 +33,9 @@ extern const char *plugin_api_ngettext (const char *single, const char *plural,
 extern int plugin_api_crypto_hash (const void *data, int data_size,
                                    const char *hash_algo,
                                    void *hash, int *hash_size);
+extern int plugin_api_crypto_hash_file (const char *filename,
+                                        const char *hash_algo,
+                                        void *hash, int *hash_size);
 extern int plugin_api_crypto_hash_pbkdf2 (const void *data, int data_size,
                                           const char *hash_algo,
                                           const void *salt, int salt_size,

src/plugins/plugin.c

@@ -665,6 +665,7 @@ plugin_load (const char *filename, int init_plugin, int argc, char **argv)
         new_plugin->utf8_strndup = &utf8_strndup;
 
         new_plugin->crypto_hash = &plugin_api_crypto_hash;
+        new_plugin->crypto_hash_file = &plugin_api_crypto_hash_file;
         new_plugin->crypto_hash_pbkdf2 = &plugin_api_crypto_hash_pbkdf2;
         new_plugin->crypto_hmac = &plugin_api_crypto_hmac;
 

src/plugins/weechat-plugin.h

@@ -68,7 +68,7 @@ struct timeval;
  * please change the date with current one; for a second change at same
  * date, increment the 01, otherwise please keep 01.
  */
-#define WEECHAT_PLUGIN_API_VERSION "20220720-02"
+#define WEECHAT_PLUGIN_API_VERSION "20220816-01"
 
 /* macros for defining plugin infos */
 #define WEECHAT_PLUGIN_NAME(__name)                                     \
@@ -380,6 +380,8 @@ struct t_weechat_plugin
     /* crypto */
     int (*crypto_hash) (const void *data, int data_size,
                         const char *hash_algo, void *hash, int *hash_size);
+    int (*crypto_hash_file) (const char *fliename,
+                             const char *hash_algo, void *hash, int *hash_size);
     int (*crypto_hash_pbkdf2) (const void *data, int data_size,
                                const char *hash_algo,
                                const void *salt, int salt_size,
@@ -1372,6 +1374,10 @@ extern int weechat_plugin_end (struct t_weechat_plugin *plugin);
                             __hash, __hash_size)                        \
     (weechat_plugin->crypto_hash)(__data, __data_size, __hash_algo,     \
                                   __hash, __hash_size)
+#define weechat_crypto_hash_file(__filename, __hash_algo, __hash,       \
+                                 __hash_size)                           \
+    (weechat_plugin->crypto_hash_file)(__filename, __hash_algo, __hash, \
+                                       __hash_size)
 #define weechat_crypto_hash_pbkdf2(__data, __data_size, __hash_algo,    \
                                    __salt, __salt_size, __iterations,   \
                                    __hash, __hash_size)                 \