1 files changed, 92 insertions, 0 deletions
diff --git a/info/btinfo.c b/info/btinfo.c
new file mode 100644
index 0000000..dfcddcb
--- /dev/null
+++ b/info/btinfo.c
@@ -0,0 +1,92 @@
+#include <sys/types.h>
+
+#include <errno.h>
+#include <getopt.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include "metainfo.h"
+#include "subr.h"
+
+static void
+usage()
+{
+    fprintf(stderr, "Usage: btinfo file ...\n\n");
+    exit(1);
+}
+
+static struct option longopts[] = {
+    { "help", no_argument, NULL, 1 },
+    { NULL, 0, NULL, 0 }
+};
+
+static void
+print_metainfo(const char *mi)
+{
+    uint8_t hash[20];
+    char hex[SHAHEXSIZE];
+    char *name = mi_name(mi);
+    unsigned nfiles = mi_nfiles(mi);
+    struct mi_file *files = mi_files(mi);
+    struct mi_announce *ann = mi_announce(mi);
+    printf("Name: %s\n", name);
+    printf("Info hash: %s\n", bin2hex(mi_info_hash(mi, hash), hex, 20));
+    printf("Tracker URLs: [ ");
+    for (int i = 0; i < ann->ntiers; i++) {
+        printf("[ ");
+        for (int j = 0; j < ann->tiers[i].nurls; j++)
+            printf("%s ", ann->tiers[i].urls[j]);
+        printf("] ");
+    }
+    printf("]\n");
+    printf("Number of pieces: %lu\n", (unsigned long)mi_npieces(mi));
+    printf("Piece size: %lld\n", (long long)mi_piece_length(mi));
+    printf("Total size: %lld\n", (long long)mi_total_length(mi));
+    printf("Number of files: %u\n", nfiles);
+    printf("Files:\n");
+    for (int i = 0; i < nfiles; i++) {
+        printf("%s (%lld)\n",
+            files[i].path, (long long)files[i].length);
+    }
+    printf("\n");
+    free(name);
+    mi_free_files(nfiles, files);
+    mi_free_announce(ann);
+}
+
+int
+main(int argc, char **argv)
+{
+    int ch;
+
+    srandom(time(NULL));
+    while ((ch = getopt_long(argc, argv, "", longopts, NULL)) != -1)
+        usage();
+
+    argc -= optind;
+    argv += optind;
+
+    if (argc < 1)
+        usage();
+
+    while (argc > 0) {
+        char *mi = NULL;
+
+        if ((mi = mi_load(*argv, NULL)) == NULL) {
+            fprintf(stderr, "failed to load torrent file '%s' (%s).\n",
+                *argv, strerror(errno));
+            exit(1);
+        }
+
+        print_metainfo(mi);
+        free(mi);
+
+        argc--;
+        argv++;
+    }
+
+    return 0;
+}