FreeCalypso > hg > osmo-playpen

annotate smsc-sendmt/read_pdu.c @ 13:2c35aad69fea

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top Makefile: add smsc-sendmt
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 27 Aug 2023 16:36:59 -0800
parents 7543aa173634
children
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1 /*
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2 * This module implements the reading of hex-encoded SMS-DELIVER TPDU
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3 * from stdin.
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4 */
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5
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6 #include <stdio.h>
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7 #include <stdint.h>
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8 #include <stdlib.h>
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9 #include <string.h>
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10
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11 extern int decode_hex_line(const char *inbuf, uint8_t *outbuf, unsigned outmax);
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12
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13 uint8_t tpdu_buf[176];
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14 unsigned tpdu_len;
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16 void read_pdu_from_stdin(void)
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17 {
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18 char linebuf[512], *nl;
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19 int rc;
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20
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21 if (!fgets(linebuf, sizeof(linebuf), stdin)) {
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22 fprintf(stderr, "error: empty stdin is not acceptable\n");
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23 exit(1);
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24 }
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25 nl = strchr(linebuf, '\n');
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26 if (!nl) {
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27 fprintf(stderr,
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28 "error: stdin line is too long or unterminated\n");
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29 exit(1);
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30 }
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31 *nl = '\0';
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32 rc = decode_hex_line(linebuf, tpdu_buf, sizeof(tpdu_buf));
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33 if (rc <= 0) {
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34 fprintf(stderr, "error: stdin line is not a valid hex PDU\n");
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35 exit(1);
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36 }
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37 tpdu_len = rc;
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38 }