FreeCalypso > hg > freecalypso-tools

annotate uptools/atcmd/smsend_concat.c @ 1011:6d9b10633f10 default tip

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etmsync Pirelli IMEI retrieval: fix poor use of printf() Bug reported by Vadim Yanitskiy <fixeria@osmocom.org>: the construct where a static-allocated string was passed to printf() without any format arguments causes newer compilers to report a security problem. Given that formatted output is not needed here, just fixed string output, change printf() to fputs(), and direct the error message to stderr while at it.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 23 May 2024 17:29:57 +0000
parents 076d533f840d
children
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076d533f840d fcup-smsend: implemented automatic concat SMS refno generation
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1 /*
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2 * This module contains the messy code for automatic generation and
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3 * increment of concat SMS reference numbers.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <sys/param.h>
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8 #include <sys/file.h>
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9 #include <sys/time.h>
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10 #include <ctype.h>
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11 #include <stdio.h>
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12 #include <stdlib.h>
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13 #include <unistd.h>
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14 #include "../../rvinterf/include/exitcodes.h"
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15
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16 static int
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17 initial_seed()
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18 {
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19 struct timeval tv;
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20 u_char refno, *cp, *endp;
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21
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22 gettimeofday(&tv, 0);
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23 cp = (u_char *) &tv;
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24 endp = cp + sizeof(struct timeval);
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25 refno = 0;
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26 while (cp < endp)
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27 refno ^= *cp++;
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28 return refno;
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29 }
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30
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31 get_concsms_refno_from_host_fs()
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32 {
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33 char *homedir, statefile[MAXPATHLEN];
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34 int fd, cc;
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35 char buf[6];
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36 u_char refno;
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37
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38 homedir = getenv("HOME");
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39 if (!homedir) {
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40 fprintf(stderr,
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41 "error: no HOME= defined, needed for concat SMS refno\n");
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42 exit(ERROR_UNIX);
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43 }
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44 sprintf(statefile, "%s/.concat_sms_refno", homedir);
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45 fd = open(statefile, O_RDWR|O_CREAT, 0666);
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46 if (fd < 0) {
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47 perror(statefile);
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48 exit(ERROR_UNIX);
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49 }
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50 cc = read(fd, buf, 5);
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51 if (cc == 5 && buf[0] == '0' && buf[1] == 'x' && isxdigit(buf[2]) &&
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52 isxdigit(buf[3]) && buf[4] == '\n')
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53 refno = strtoul(buf, 0, 16) + 1;
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54 else
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55 refno = initial_seed();
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56 sprintf(buf, "0x%02X\n", refno);
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57 lseek(fd, 0, SEEK_SET);
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58 write(fd, buf, 5);
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59 close(fd);
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60 return refno;
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61 }