Use current date and time in filename of screenshot tool

1 files changed, 11 insertions, 6 deletions

diff --git a/tools/idevicescreenshot.c b/tools/idevicescreenshot.c
index ca4454c..1604198 100644
--- a/tools/idevicescreenshot.c
+++ b/tools/idevicescreenshot.c
@@ -2,6 +2,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <errno.h>
+#include <time.h>
 
 #include <libimobiledevice/libimobiledevice.h>
 #include <libimobiledevice/lockdown.h>
@@ -68,19 +69,22 @@ int main(int argc, char **argv)
                         printf("Could not connect to screenshotr!\n");
                 } else {
                         char *imgdata = NULL;
+                        char filename[36];
                         uint64_t imgsize = 0;
+                        time_t now = time(NULL);
+                        strftime(filename, 36, "screenshot-%Y-%m-%d-%H-%M-%S.tiff", gmtime(&now));
                         if (screenshotr_take_screenshot(shotr, &imgdata, &imgsize) == SCREENSHOTR_E_SUCCESS) {
-                                FILE *f = fopen("screenshot.tiff", "w");
+                                FILE *f = fopen(filename, "w");
                                 if (f) {
                                         if (fwrite(imgdata, 1, (size_t)imgsize, f) == (size_t)imgsize) {
-                                                printf("Screenshot saved to screenshot.tiff\n");
+                                                printf("Screenshot saved to %s\n", filename);
                                                 result = 0;
                                         } else {
-                                                printf("Could not save screenshot to file!\n");
+                                                printf("Could not save screenshot to file %s!\n", filename);
                                         }
                                         fclose(f);
                                 } else {
-                                        printf("Could not open screenshot.tiff for writing: %s\n", strerror(errno));
+                                        printf("Could not open %s for writing: %s\n", filename, strerror(errno));
                                 }
                         } else {
                                 printf("Could not get screenshot!\n");
@@ -102,8 +106,9 @@ void print_usage(int argc, char **argv)
         name = strrchr(argv[0], '/');
         printf("Usage: %s [OPTIONS]\n", (name ? name + 1: argv[0]));
         printf("Gets a screenshot from the connected iPhone/iPod Touch.\n");
-        printf("NOTE: A mounted developer disk image is required on the device, otherwise\n");
-        printf(" the screenshotr service is not available.\n\n");
+        printf("The screenshot is saved as a TIFF image in the current directory.\n");
+        printf("NOTE: A mounted developer disk image is required on the device, otherwise\n");
+        printf("the screenshotr service is not available.\n\n");
         printf("  -d, --debug\t\tenable communication debugging\n");
         printf("  -u, --uuid UUID\ttarget specific device by its 40-digit device UUID\n");
         printf("  -h, --help\t\tprints usage information\n");