annotate uptools/libcoding/gsmtime.c @ 921:74d284add54d

fc-fsio: guard against bogus readdir results from the target If the FFS being operated on contains SE K2x0 extended filenames, readdir will return strings that are bad for printing. We need to guard against this possibility, and also against possible other bogosity that could be sent by other alien firmwares.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 31 Dec 2022 22:55:23 +0000
parents f40530e2d48d
children
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f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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1 /*
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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2 * This library module implements decoding of GSM timestamps.
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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3 */
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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4
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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5 #include <sys/types.h>
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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6 #include <stdio.h>
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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7
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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8 gsm_timestamp_decode(inbuf, outbuf)
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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9 u_char *inbuf;
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10 char *outbuf;
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11 {
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12 u_char rev[7];
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13 int i, d1, d2, tzsign;
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14
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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15 for (i = 0; i < 7; i++) {
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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16 d1 = inbuf[i] & 0xF;
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17 d2 = inbuf[i] >> 4;
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18 rev[i] = (d1 << 4) | d2;
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19 }
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20 if (rev[6] & 0x80) {
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21 rev[6] &= 0x7F;
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22 tzsign = '-';
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23 } else
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24 tzsign = '+';
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25 sprintf(outbuf, "%02X/%02X/%02X,%02X:%02X:%02X%c%02X", rev[0], rev[1],
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26 rev[2], rev[3], rev[4], rev[5], tzsign, rev[6]);
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27 }