1 files changed, 151 insertions, 0 deletions
diff --git a/tools/ffhash.c b/tools/ffhash.c
new file mode 100644
index 0000000000..a9f71c26c5
--- /dev/null
+++ b/tools/ffhash.c
@@ -0,0 +1,151 @@
+/*
+ * Copyright (c) 2002 Fabrice Bellard
+ * Copyright (c) 2013 Michael Niedermayer
+ * Copyright (c) 2013 James Almer
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+#include "libavutil/avstring.h"
+#include "libavutil/error.h"
+#include "libavutil/hash.h"
+#include "libavutil/mem.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <sys/stat.h>
+
+#if HAVE_IO_H
+#include <io.h>
+#endif
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#define SIZE 65536
+
+static struct AVHashContext *hash;
+static int out_b64;
+
+static void usage(void)
+{
+    int i = 0;
+    const char *name;
+
+    printf("usage: ffhash [b64:]algorithm [input]...\n");
+    printf("Supported hash algorithms:");
+    do {
+        name = av_hash_names(i);
+        if (name)
+            printf(" %s", name);
+        i++;
+    } while(name);
+    printf("\n");
+}
+
+static void finish(void)
+{
+    char res[2 * AV_HASH_MAX_SIZE + 4];
+
+    printf("%s=", av_hash_get_name(hash));
+    if (out_b64) {
+        av_hash_final_b64(hash, res, sizeof(res));
+        printf("b64:%s", res);
+    } else {
+        av_hash_final_hex(hash, res, sizeof(res));
+        printf("0x%s", res);
+    }
+}
+
+static int check(char *file)
+{
+    uint8_t buffer[SIZE];
+    int fd, flags = O_RDONLY;
+    int ret = 0;
+
+#ifdef O_BINARY
+    flags |= O_BINARY;
+#endif
+    if (file) fd = open(file, flags);
+    else      fd = 0;
+    if (fd == -1) {
+        printf("%s=OPEN-FAILED: %s:", av_hash_get_name(hash), strerror(errno));
+        ret = 1;
+        goto end;
+    }
+
+    av_hash_init(hash);
+    for (;;) {
+        int size = read(fd, buffer, SIZE);
+        if (size < 0) {
+            close(fd);
+            finish();
+            printf("+READ-FAILED: %s", strerror(errno));
+            ret = 2;
+            goto end;
+        } else if(!size)
+            break;
+        av_hash_update(hash, buffer, size);
+    }
+    close(fd);
+
+    finish();
+end:
+    if (file)
+        printf(" *%s", file);
+    printf("\n");
+
+    return ret;
+}
+
+int main(int argc, char **argv)
+{
+    int i;
+    int ret = 0;
+    const char *hash_name;
+
+    if (argc == 1) {
+        usage();
+        return 0;
+    }
+
+    hash_name = argv[1];
+    out_b64 = av_strstart(hash_name, "b64:", &hash_name);
+    if ((ret = av_hash_alloc(&hash, hash_name)) < 0) {
+        switch(ret) {
+        case AVERROR(EINVAL):
+            printf("Invalid hash type: %s\n", hash_name);
+            break;
+        case AVERROR(ENOMEM):
+            printf("%s\n", strerror(errno));
+            break;
+        }
+        return 1;
+    }
+
+    for (i = 2; i < argc; i++)
+        ret |= check(argv[i]);
+
+    if (argc < 3)
+        ret |= check(NULL);
+
+    av_hash_freep(&hash);
+
+    return ret;
+}