FreeCalypso > hg > freecalypso-tools

annotate uptools/libcoding/hexencode.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 ae2556e256a4
children
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361
ae2556e256a4 uptools/libcoding: implemented function for generating hex strings
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1 /*
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2 * This module contains the function for generating hex strings.
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3 */
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4
ae2556e256a4 uptools/libcoding: implemented function for generating hex strings
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5 #include <sys/types.h>
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6 #include <stdio.h>
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7
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8 make_hex_string(inbuf, len, outbuf)
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9 u_char *inbuf;
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10 unsigned len;
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11 char *outbuf;
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12 {
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13 char *dp = outbuf;
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14 unsigned n;
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15
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16 for (n = 0; n < len; n++) {
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17 sprintf(dp, "%02X", inbuf[n]);
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18 dp += 2;
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19 }
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20 *dp = '\0';
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21 }