FreeCalypso > hg > freecalypso-tools

annotate rvinterf/asyncshell/sendarb.c @ 965:2969032bdfac

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fcup-smsend[mult]: fix buglet in K&R C NULL pointer passing The only 100% safe way to pass a NULL pointer as a function argument in K&R C is to cast 0 to a pointer type; failing to do so may cause mysterious bugs (invalid stack frames or garbage in argument registers) on 64-bit machines. This issue has already been fixed in most of FC host tools, but I just found some missed spots: passing of NULL UDH to PDU encoding functions in fcup-smsend[mult] in the case of single (not concatenated) SMS.
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 01 Sep 2023 07:33:51 +0000
parents d43d82cbfb85
children
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1 /*
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2 * Command for sending arbitrary packets to the target
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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 <ctype.h>
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8 #include <string.h>
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9 #include <strings.h>
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10 #include <stdlib.h>
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11 #include "limits.h"
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12 #include "exitcodes.h"
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14 cmd_send_common(argc, argv)
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15 char **argv;
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16 {
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17 u_char sendpkt[MAX_PKT_TO_TARGET];
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18 unsigned pktlen = argc, i;
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19 char *endp;
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21 for (i = 0; i < pktlen; i++) {
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22 sendpkt[i] = strtoul(argv[i], &endp, 16);
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23 if (*endp) {
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24 printf(
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25 "error: all arguments to send command must be hex bytes\n");
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26 return(ERROR_USAGE);
0
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27 }
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28 }
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29 /* send it! */
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30 send_pkt_to_target(sendpkt, pktlen);
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31 return(0);
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32 }
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33
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34 void
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35 cmd_send_interactive(argstr)
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36 char *argstr;
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37 {
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38 char *argv[MAX_PKT_TO_TARGET+1];
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39 int argc, rc;
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41 rc = parse_interactive_command_into_argv(argstr, argv, 1,
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42 MAX_PKT_TO_TARGET, &argc);
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43 if (rc < 0)
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44 return;
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45 cmd_send_common(argc, argv);
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46 }
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48 cmd_send_oneshot(argc, argv)
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49 char **argv;
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50 {
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51 return cmd_send_common(argc - 1, argv + 1);
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52 }