- better error handling and minor changes in photobox.c

[photobox.git] / src / photobox.c

diff --git a/src/photobox.c b/src/photobox.c
index 15986e74e2fd543cf35166b3987b72d719fb21de..e30496f77c8160371e2d27a0784d87f9fe52dd9f 100644 (file)
--- a/src/photobox.c
+++ b/src/photobox.c
@@ -1,3 +1,5 @@
+// Copyright (C) 2019 Jaslo Ziska
+

 #include <stdio.h>
 #include <stdlib.h>
 #include <time.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <time.h>


@@ -10,9 +12,9 @@
 #include <qrencode.h>
 
 #include "photobox_photo.h"
 #include <qrencode.h>
 
 #include "photobox_photo.h"

-#include "apikey.h"
+#include "apikey.h" // are you looking for this? :)

 
 

-// fehlt in glib??
+// missing in glib???

 #define G_SOURCE_FUNC(f) ((GSourceFunc) (void (*)(void)) (f))
 
 void pb_exit(void);
 #define G_SOURCE_FUNC(f) ((GSourceFunc) (void (*)(void)) (f))
 
 void pb_exit(void);


@@ -47,12 +49,12 @@ static unsigned int button_pin = 26;
 int main(int argc, char *argv[])
 {
         if (pb_ph_init() != 0) {
 int main(int argc, char *argv[])
 {
         if (pb_ph_init() != 0) {

-                fprintf(stderr, "ERROR: pb_ph_init\n");
-                return 1;
+                fprintf(stderr, "ERROR in pb_ph_init\n");
+                return EXIT_FAILURE;

         }
         if (gpio_map() == NULL) {
         }
         if (gpio_map() == NULL) {

-                fprintf(stderr, "ERROR: gpio_map\n");
-                return 1;
+                fprintf(stderr, "ERROR in gpio_map\n");
+                return EXIT_FAILURE;

         }
         gtk_init(&argc, &argv);
 
         }
         gtk_init(&argc, &argv);
 


@@ -135,12 +137,13 @@ int main(int argc, char *argv[])
 
         gtk_main();
 
 
         gtk_main();
 

-        return 0;
+        return EXIT_SUCCESS;

 }
 
 void pb_exit(void)
 {
         gpio_unmap();
 }
 
 void pb_exit(void)
 {
         gpio_unmap();

+        pb_ph_uninit();

         gtk_main_quit();
 }
 
         gtk_main_quit();
 }
 


@@ -155,7 +158,7 @@ void pb_show_main(void)
 
         gtk_widget_show(button_take);
 
 
         gtk_widget_show(button_take);
 

-        // take picture with button
+        // take picture with button (ugly)

         g_idle_add(G_SOURCE_FUNC(pb_poll_buttton), NULL);
 }
 
         g_idle_add(G_SOURCE_FUNC(pb_poll_buttton), NULL);
 }
 


@@ -185,17 +188,30 @@ void pb_show_qr(void)
         pid_t pid = fork();
         if (pid == 0) {
                 // child -> copy and upload
         pid_t pid = fork();
         if (pid == 0) {
                 // child -> copy and upload

-                if (pb_cp_dp(id) < 0) {
-                        fprintf(stderr, "Error: pb_cp_dp\n");
+                if (pb_cp_dp(id) != 0) {
+                        fprintf(stderr, "ERROR in pb_cp_dp\n");

                         exit(EXIT_FAILURE);
                 } else {
                         exit(EXIT_SUCCESS);
                 }
         } else if (pid < 0) {
                         exit(EXIT_FAILURE);
                 } else {
                         exit(EXIT_SUCCESS);
                 }
         } else if (pid < 0) {

-                fprintf(stderr, "FORK ERROR!!!!!\n");
-                // TODO: dont show qr
+                fprintf(stderr, "ERROR in fork (big problem)\n");
+
+                // try to at least save the picture (the ugly way)
+                char *cmd = "cp tmp.jpg bilder/xxxxxx.jpg";
+                for (unsigned int i = 0; i < 6; ++i) {
+                        cmd[i + 18] = id[i];
+                }
+                if (system(cmd) != 0)
+                        perror("ERROR in system(), picture could not be saved");
+
+                // go back to start, dont show qr
+                pb_show_main();
+                return;

         }
 
         }
 

+        // parent -> continue GUI
+

         // url qr should point to
         // example: https://www.dropbox.com/sh/3pq0pwednyuig86/AACx0_vjn-liY5_pP_C3nJD8a?dl=0&preview=c1b052c5.jpg
         char url[] = "https://www.dropbox.com/sh/3pq0pwednyuig86/AACx0_vjn-liY5_pP_C3nJD8a?dl=0&preview=xxxxxx.jpg";
         // url qr should point to
         // example: https://www.dropbox.com/sh/3pq0pwednyuig86/AACx0_vjn-liY5_pP_C3nJD8a?dl=0&preview=c1b052c5.jpg
         char url[] = "https://www.dropbox.com/sh/3pq0pwednyuig86/AACx0_vjn-liY5_pP_C3nJD8a?dl=0&preview=xxxxxx.jpg";


@@ -207,7 +223,8 @@ void pb_show_qr(void)
         QRcode *qr = QRcode_encodeString(url, 0, QR_ECLEVEL_H, QR_MODE_8, 1);
         if (qr == NULL) {
                 perror("Failed to generate QR-Code");
         QRcode *qr = QRcode_encodeString(url, 0, QR_ECLEVEL_H, QR_MODE_8, 1);
         if (qr == NULL) {
                 perror("Failed to generate QR-Code");

-                pb_exit();
+                pb_show_main();
+                return;

         }
 
         unsigned int size = qr->width;
         }
 
         unsigned int size = qr->width;


@@ -239,6 +256,7 @@ void pb_show_qr(void)
         gtk_label_set_markup(GTK_LABEL(qr_label), text);
 }
 
         gtk_label_set_markup(GTK_LABEL(qr_label), text);
 }
 

+// not proud of this

 gboolean pb_poll_buttton(void)
 {
         if (gpio_tst(button_pin) == 0) {
 gboolean pb_poll_buttton(void)
 {
         if (gpio_tst(button_pin) == 0) {


@@ -249,6 +267,7 @@ gboolean pb_poll_buttton(void)
         }
 }
 
         }
 }
 

+// neither of this

 gboolean pb_countdown(void)
 {
         static int num = 0;
 gboolean pb_countdown(void)
 {
         static int num = 0;


@@ -291,18 +310,18 @@ gboolean pb_countdown(void)
                         gtk_label_set_markup(GTK_LABEL(label_countdown),
                                 "<span font='300' color='red'>0</span>");
 
                         gtk_label_set_markup(GTK_LABEL(label_countdown),
                                 "<span font='300' color='red'>0</span>");
 

-                        // 0 zeigen bevor der anfängt zu rechnen
+                        // do all pendfing events (show 0) before taking picture

                         while (gtk_events_pending()) {
                                 gtk_main_iteration();
                         }
 
                         while (gtk_events_pending()) {
                                 gtk_main_iteration();
                         }
 

-                        // bild aufnehmen
+                        // take pic

                         pb_takepic();
                         pb_show_send();
                         return G_SOURCE_REMOVE;
         }
                         pb_takepic();
                         pb_show_send();
                         return G_SOURCE_REMOVE;
         }

-        // wenn das passiert ist was schief gelaufen
-        printf("etwas ist sehr schief gelaufen\n");
+
+        printf("ERROR: this should never happen?\n");

         return G_SOURCE_REMOVE;
 }
 
         return G_SOURCE_REMOVE;
 }
 


@@ -310,7 +329,7 @@ void pb_takepic(void)
 {
         char *fn = "tmp.jpg";
         if (pb_ph_capture_file(fn) != 0) {
 {
         char *fn = "tmp.jpg";
         if (pb_ph_capture_file(fn) != 0) {

-                fprintf(stderr, "ERROR: pb_ph_capture_file\n");
+                fprintf(stderr, "ERROR in pb_ph_capture_file\n");

                 gtk_main_quit();
                 return;
         }
                 gtk_main_quit();
                 return;
         }


@@ -338,7 +357,7 @@ int pb_cp_dp(char *id)
 
         FILE *src_file = fopen(src, "rb");
         if (src_file == NULL) {
 
         FILE *src_file = fopen(src, "rb");
         if (src_file == NULL) {

-                perror("Error opening \"tmp.jpg\"");
+                perror("Error opening tmp.jpg");

                 return -1;
         }
         FILE *dest_file = fopen(dest, "wb+");
                 return -1;
         }
         FILE *dest_file = fopen(dest, "wb+");


@@ -348,27 +367,33 @@ int pb_cp_dp(char *id)
                 return -1;
         }
 
                 return -1;
         }
 

+        // copy file

         do {
                 num_read = fread(buffer, 1, 4096, src_file);
                 dest_fsize += num_read;
                 if (fwrite(buffer, 1, num_read, dest_file) != num_read && ferror(dest_file) != 0) {
                         fprintf(stderr, "Error writing to destination file");
         do {
                 num_read = fread(buffer, 1, 4096, src_file);
                 dest_fsize += num_read;
                 if (fwrite(buffer, 1, num_read, dest_file) != num_read && ferror(dest_file) != 0) {
                         fprintf(stderr, "Error writing to destination file");

+                        fclose(src_file);

                         goto error_file;
                 }
         } while(num_read == 4096);
                         goto error_file;
                 }
         } while(num_read == 4096);

+

         if (ferror(src_file) != 0) {
         if (ferror(src_file) != 0) {

-                fprintf(stderr, "Error reading from \"tmp.jpg\"");
+                fclose(src_file);
+                fprintf(stderr, "Error reading from tmp.jpg\n");
+                perror("^");

                 goto error_file;
         }
 
         fclose(src_file);
                 goto error_file;
         }
 
         fclose(src_file);

+

         rewind(dest_file); // from beginning for upload
 
         // upload
         curl_global_init(CURL_GLOBAL_ALL);
         CURL *curl = curl_easy_init();
         if (curl == NULL) {
         rewind(dest_file); // from beginning for upload
 
         // upload
         curl_global_init(CURL_GLOBAL_ALL);
         CURL *curl = curl_easy_init();
         if (curl == NULL) {

-                fprintf(stderr, "ERROR: curl_easy_init\n");
+                fprintf(stderr, "ERROR in curl_easy_init\n");

                 curl_global_cleanup();
                 goto error_file;
         }
                 curl_global_cleanup();
                 goto error_file;
         }


@@ -391,19 +416,10 @@ int pb_cp_dp(char *id)
 
         CURLcode ret = curl_easy_perform(curl);
         if (ret != CURLE_OK) {
 
         CURLcode ret = curl_easy_perform(curl);
         if (ret != CURLE_OK) {

-                fprintf(stderr, "ERROR: curl_easy_perform: %s\n", curl_easy_strerror(ret));
+                fprintf(stderr, "ERROR in curl_easy_perform: %s\n", curl_easy_strerror(ret));

                 goto error_curl;
         }
 
                 goto error_curl;
         }
 

-        curl_slist_free_all(header);
-        curl_easy_cleanup(curl);
-
-        curl_global_cleanup();
-
-        fclose(dest_file);
-
-        return 0;
-

         error_curl:
         curl_slist_free_all(header);
         curl_easy_cleanup(curl);
         error_curl:
         curl_slist_free_all(header);
         curl_easy_cleanup(curl);


@@ -413,5 +429,5 @@ int pb_cp_dp(char *id)
         error_file:
         fclose(dest_file);
 
         error_file:
         fclose(dest_file);
 

-        return -1;
+        return ret;

 }
 }