From 831f9f01fbe4088eb6bd378c0e417d9996b676fd Mon Sep 17 00:00:00 2001
From: scratko <m@scratko.xyz>
Date: Fri, 30 Aug 2024 12:46:56 +0300
Subject: Final version v2.0

Added windows client.
SIGPIPE signal was being sent to the server when the client was disconnected.
Now there is handling of this signal.
Added a delay when displaying some informational messages.
---
 linux_client/data_decryption.c | 181 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 181 insertions(+)
 create mode 100644 linux_client/data_decryption.c

(limited to 'linux_client/data_decryption.c')

diff --git a/linux_client/data_decryption.c b/linux_client/data_decryption.c
new file mode 100644
index 0000000..1054c45
--- /dev/null
+++ b/linux_client/data_decryption.c
@@ -0,0 +1,181 @@
+#include "data_decryption.h"
+#include "client.h"
+#include "card_stack.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+void decrypt_set_state(struct client *cl, char **end_p)
+{
+    enum client_states found_state;
+
+    found_state = (enum client_states) strtol(cl->buffer, end_p, 10);
+    cl->state = found_state;
+}
+
+/* return convert number from str */
+int decrypt_get_number(char *start_p, char **end_p)
+{
+    return strtol(start_p, end_p, 10);
+}
+
+static void decrypt_set_trump_card(struct client *cl, char *start_p,
+                                   char **end_p)
+{
+    int i;
+
+    for(i = 0; *start_p != ':'; ++start_p, ++i)
+        cl->trump_card[i] = *start_p;
+    cl->trump_card[i] = '\0';
+    *end_p = start_p;
+}
+
+void decrypt_set_base_info(struct client *cl, char *start_p, char **end_p)
+{
+    int i, j;
+    char tmp_card[4];
+    char *card = NULL;
+
+    cl->total_players = decrypt_get_number(start_p, end_p);
+    cl->total_cards_left = decrypt_get_number(*end_p+1, end_p);
+    cl->player_position = decrypt_get_number(*end_p+1, end_p);
+    decrypt_set_trump_card(cl, *end_p+1, end_p);
+
+    if(!cl->cc.number_arr) {
+        cl->cc.number_arr = malloc(cl->total_players * sizeof(int));
+        /*
+         * memorize the size of the array,
+         * because later the number of players may change (client disconnection)
+         */
+        cl->cc.number_arr_idx = cl->total_players-1;
+    }
+
+    /* ============== extraction quantity of cards =============== */
+
+    /* numbers are separated by '\' */
+    i = 0;
+    do {
+        cl->cc.number_arr[i] = decrypt_get_number(*end_p+1, end_p);
+        ++i;
+    } while(**end_p != ':');
+
+    /* ============== extraction cards on table =============== */
+    i = 0, j = 0;
+    for(start_p = *end_p + 1; *start_p != ':'; ++start_p) {
+        /* empty table */
+        if(*start_p == '=') {
+            /* to delimiter : */
+            ++start_p;
+            i = -1;
+            break;
+        }
+        /* delimiter between cards on table */
+        if(*start_p == '+') {
+            cl->cot.card_arr[i][j] = '\0';
+            ++i;
+            j = 0;
+            continue;
+        }
+        cl->cot.card_arr[i][j] = *start_p;
+        ++j;
+    }
+    /* for the last card we need to add a null character */
+    if(i != -1)
+        cl->cot.card_arr[i][j] = '\0';
+    cl->cot.card_arr_idx = i;
+
+    /* ================= extraction player's deck ================*/
+    /* clear previous stack */
+    if(cl->deck)
+        clear_stack(&cl->deck);
+    init_stack(&cl->deck);
+
+    for(++start_p, i = 0; *start_p != ':' && *start_p != '\n'; ++start_p) {
+        /* empty deck */
+        if(*start_p == '=') {
+            i = -1;
+            /* to delimiter ':' or '\n' */
+            ++start_p;
+            break;
+        }
+        /* delimiter */
+        if(*start_p == '\\') {
+            tmp_card[i] = '\0';
+            card = malloc(strlen(tmp_card) + 1);
+            strcpy(card, tmp_card);
+            push_stack(&cl->deck, card);
+            i = 0;
+            continue;
+        }
+        tmp_card[i] = *start_p;
+        ++i;
+    }
+    if(i != -1) {
+        tmp_card[i] = '\0';
+        card = malloc(strlen(tmp_card) + 1);
+        strcpy(card, tmp_card);
+        push_stack(&cl->deck, card);
+    }
+    *end_p = start_p;
+}
+
+void decrypt_set_position_whose_turn(struct client *cl, char *start_p,
+                                     char **end_p)
+{
+    cl->position_whose_turn = decrypt_get_number(start_p, end_p);
+}
+
+void decrypt_set_card_queue(struct client *cl, char *start_p, char **end_p)
+{
+    int i, j;
+
+    for(i = 0, j = 0; *start_p != ':' && *start_p != '\n'; ++start_p) {
+        /* empty queue */
+        if(*start_p == '=') {
+            i = -1;
+            ++start_p;
+            break;
+        }
+        /* delimiter '\' */
+        if(*start_p == '\\') {
+            cl->cq.card_arr[i][j] = '\0';
+            j = 0;
+            ++i;
+            continue;
+        }
+        cl->cq.card_arr[i][j] = *start_p;
+        ++j;
+    }
+    /* last element */
+    if(i != -1)
+        cl->cq.card_arr[i][j] = '\0';
+    cl->cq.card_arr_idx = i;
+    *end_p = start_p;
+}
+
+void decrypt_set_card_acceptance_status(struct client *cl, char *start_p)
+{
+    int i;
+    char tmp_buffer[8];
+
+    for(i = 0; *start_p != '\n'; ++start_p, ++i)
+        tmp_buffer[i] = *start_p;
+    tmp_buffer[i] = '\0';
+    if(!strcmp(tmp_buffer, "all")) {
+        cl->all_input_cards_accepted = 1;
+        return;
+    }
+    if(!strcmp(tmp_buffer, "not all"))
+        cl->all_input_cards_accepted = 0;
+}
+
+void decrypt_set_spectator_mode(struct client *cl, char *start_p)
+{
+    cl->sp_mode = (enum spectator_mode) decrypt_get_number(start_p, NULL);
+}
+
+void decrypt_set_durak_position(struct client *cl, char *start_p)
+{
+    cl->durak_position = decrypt_get_number(start_p, NULL);
+}
-- 
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