FreeCalypso > hg > freecalypso-tools

annotate rvinterf/l1filter/rvif_rx.c @ 1012:11391cb6bdc0

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patch from fixeria: doc change from SE K2x0 to K2xx Since their discovery in late 2022, Sony Ericsson K200 and K220 phones were collectively referred to as SE K2x0 in FreeCalypso documentation. However, now that SE K205 has been discovered as yet another member of the same family (same PCBA in different case), it makes more sense to refer to the whole family as SE K2xx.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 23 Sep 2024 12:23:20 +0000
parents ea458ee48691
children
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1 /*
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2 * This module implements message Rx from rvinterf.
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3 */
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4
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5 #include <sys/types.h>
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6 #include <stdio.h>
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7 #include <stdlib.h>
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8 #include <unistd.h>
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9 #include "localsock.h"
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10 #include "exitcodes.h"
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12 extern int sock;
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14 u_char rvi_msg[LOCALSOCK_MAX_MSG];
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15 int rvi_msg_len;
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16
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17 static int rx_state, rx_left;
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18 static u_char *rx_ptr;
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19
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20 void
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21 localsock_prep_for_length_rx()
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22 {
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23 rx_state = 0;
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24 rx_ptr = rvi_msg;
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25 rx_left = 2;
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26 }
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27
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28 static void
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29 prep_for_message_rx()
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30 {
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31 rx_state = 1;
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32 rx_ptr = rvi_msg;
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33 rx_left = rvi_msg_len;
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34 }
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35
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36 void
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37 process_msg_from_rvinterf()
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38 {
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39 switch (rvi_msg[0]) {
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40 case RVI2CLI_PKT_FROM_TARGET:
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41 process_pkt_from_target();
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42 return;
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43 case RVI2CLI_LOCAL_CMD_RESP:
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44 if (rvi_msg_len < 2)
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45 goto bad;
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46 if (rvi_msg[1] == '+')
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47 return;
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48 fprintf(stderr, "Error from rvinterf: %.*s\n", rvi_msg_len - 1,
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49 rvi_msg + 1);
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50 exit(ERROR_RVINTERF);
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51 default:
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52 bad:
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53 fprintf(stderr,
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54 "Error: unexpected message type %02X from rvinterf\n",
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55 rvi_msg[0]);
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56 exit(ERROR_RVINTERF);
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57 }
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58 }
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59
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60 void
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61 handle_rvinterf_input()
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62 {
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63 int cc;
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65 cc = read(sock, rx_ptr, rx_left);
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66 if (cc <= 0) {
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67 perror("read from rvinterf socket");
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68 exit(ERROR_RVINTERF);
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69 }
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70 rx_ptr += cc;
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71 rx_left -= cc;
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72 if (rx_left)
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73 return;
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74 /* got the thing, process it */
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75 if (rx_state) {
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76 process_msg_from_rvinterf();
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77 localsock_prep_for_length_rx();
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78 } else {
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79 rvi_msg_len = rvi_msg[0] << 8 | rvi_msg[1];
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80 if (rvi_msg_len < 1 || rvi_msg_len > LOCALSOCK_MAX_MSG) {
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81 fprintf(stderr,
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82 "Invalid length from rvinterf: %02X%02X\n",
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83 rvi_msg[0], rvi_msg[1]);
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84 exit(ERROR_RVINTERF);
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85 }
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86 prep_for_message_rx();
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87 }
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88 }