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annotate net.c @ 1863:d60f2d7c02a5

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Differentiate between the full Sega mapper and the SRAM only one. Fixes crash on save state load for Phantasy Star IV and other games that use the same mapper
author Michael Pavone <pavone@retrodev.com>
date Tue, 14 May 2019 23:20:35 -0700
parents 78abbabfd58d
children
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1 #include <sys/types.h>
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2 #include <ifaddrs.h>
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3 #include <netinet/in.h>
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4 #include "net.h"
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5
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6 static uint8_t is_loopback(struct sockaddr_in *addr)
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7 {
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8 return (addr->sin_addr.s_addr & 0xFF) == 127;
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9 }
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10
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11 static void format_address(uint8_t *dst, struct sockaddr_in *addr)
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12 {
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13 long ip = addr->sin_addr.s_addr;
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14 dst[0] = ip;
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15 dst[1] = ip >> 8;
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16 dst[2] = ip >> 16;
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17 dst[3] = ip >> 24;
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18 }
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19
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20 uint8_t get_host_address(iface_info *out)
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21 {
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78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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22 #ifdef __ANDROID__
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23 //TODO: write an implementation for Android
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24 return 0;
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25 #else
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26 struct ifaddrs *entries, *current, *localhost;
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27 if (getifaddrs(&entries)) {
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28 return 0;
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29 }
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30
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31 for (current = entries; current; current = current->ifa_next)
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32 {
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33 if (current->ifa_addr && current->ifa_addr->sa_family == AF_INET) {
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34 struct sockaddr_in *addr = (struct sockaddr_in *)current->ifa_addr;
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35 if (is_loopback(addr)) {
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36 localhost = current;
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37 } else {
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38 break;
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39 }
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40 }
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41 }
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42 if (!current && localhost) {
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43 current = localhost;
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44 }
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45 uint8_t ret = 0;
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46 if (current) {
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47 ret = 1;
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48 format_address(out->ip, (struct sockaddr_in *)current->ifa_addr);
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49 format_address(out->net_mask, (struct sockaddr_in *)current->ifa_netmask);
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50 }
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51 freeifaddrs(entries);
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52 return ret;
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53 #endif
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54 }