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comparison simtool/hexread.c @ 150:54e33e9238b6

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fc-simtool: harmonize hex string code with fc-uicc-tool
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 07 Feb 2021 00:06:50 +0000
parents 4aaf722ab933
children
comparison
equal deleted inserted replaced
149:451ed3bbfe96 150:54e33e9238b6
7 #include <ctype.h> 7 #include <ctype.h>
8 #include <string.h> 8 #include <string.h>
9 #include <strings.h> 9 #include <strings.h>
10 #include <stdio.h> 10 #include <stdio.h>
11 #include <stdlib.h> 11 #include <stdlib.h>
12
13 decode_hex_digit(c)
14 {
15 if (c >= '0' && c <= '9')
16 return(c - '0');
17 if (c >= 'A' && c <= 'F')
18 return(c - 'A' + 10);
19 if (c >= 'a' && c <= 'f')
20 return(c - 'a' + 10);
21 return(-1);
22 }
23 12
24 read_hex_data_file(filename, databuf) 13 read_hex_data_file(filename, databuf)
25 char *filename; 14 char *filename;
26 u_char *databuf; 15 u_char *databuf;
27 { 16 {
63 fprintf(stderr, "%s: no hex data input found\n", filename); 52 fprintf(stderr, "%s: no hex data input found\n", filename);
64 return(-1); 53 return(-1);
65 } 54 }
66 return(count); 55 return(count);
67 } 56 }
68
69 decode_hex_data_from_string(arg, databuf)
70 char *arg;
71 u_char *databuf;
72 {
73 unsigned count;
74
75 for (count = 0; ; count++) {
76 while (isspace(*arg))
77 arg++;
78 if (!*arg)
79 break;
80 if (!isxdigit(arg[0]) || !isxdigit(arg[1])) {
81 fprintf(stderr, "error: invalid hex string input\n");
82 return(-1);
83 }
84 if (count >= 255) {
85 fprintf(stderr, "error: hex input data is too long\n");
86 return(-1);
87 }
88 databuf[count] = (decode_hex_digit(arg[0]) << 4) |
89 decode_hex_digit(arg[1]);
90 arg += 2;
91 }
92 if (!count) {
93 fprintf(stderr, "error: empty hex string argument\n");
94 return(-1);
95 }
96 return(count);
97 }