FreeCalypso > hg > freecalypso-reveng
annotate miscprog/rfcap-grep.c @ 408:14302e075f37 default tip
hr-bits: further conditionalize SID-1-diff
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 22 Jul 2024 10:06:38 +0000 |
parents | 597143ba1c37 |
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rev | line source |
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64
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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1 /* |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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2 * This utility performs a memmem() binary "grep", checking to see if a given |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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3 * binary file (mokoN firmware image) contains a particular binary "string" |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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4 * of 16 bytes: namely, the 16 bytes found in the "standard" /gsm/com/rfcap |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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5 * file on GTA0x modems. |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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6 */ |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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7 |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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8 #define _GNU_SOURCE |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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9 #include <sys/types.h> |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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10 #include <sys/file.h> |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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11 #include <sys/stat.h> |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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12 #include <stdio.h> |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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13 #include <string.h> |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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14 #include <stdlib.h> |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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15 #include <unistd.h> |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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16 |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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17 u_char needle[16] = {0x00, 0x1F, 0x41, 0x14, 0x00, 0x00, 0x00, 0x00, |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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18 0x50, 0x00, 0x00, 0xA5, 0x05, 0x00, 0xC0, 0x00}; |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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diff
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19 u_char *haystack; |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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20 size_t haystack_size; |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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21 |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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22 read_file(filename) |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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23 char *filename; |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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24 { |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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25 int fd; |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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26 struct stat st; |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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27 |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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28 fd = open(filename, O_RDONLY); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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diff
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29 if (fd < 0) { |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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diff
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30 perror(filename); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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diff
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31 exit(1); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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32 } |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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33 fstat(fd, &st); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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34 if (!S_ISREG(st.st_mode)) { |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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35 fprintf(stderr, "error: %s is not a regular file\n", filename); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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36 exit(1); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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37 } |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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38 haystack_size = st.st_size; |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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39 haystack = malloc(haystack_size); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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40 if (!haystack) { |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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41 fprintf(stderr, "unable to malloc buffer for %s\n", filename); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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42 exit(1); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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43 } |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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44 read(fd, haystack, haystack_size); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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45 close(fd); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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46 } |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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47 |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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48 main(argc, argv) |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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49 char **argv; |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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50 { |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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51 u_char *result; |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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52 |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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53 if (argc != 2) { |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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54 fprintf(stderr, "usage: %s mokoN.bin\n", argv[0]); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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55 exit(1); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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56 } |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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57 read_file(argv[1]); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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58 result = memmem(haystack, haystack_size, needle, sizeof needle); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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59 if (result) |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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60 printf("Found the rfcap bytes at offset 0x%x\n", |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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61 result - haystack); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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62 else |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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63 printf("rfcap bytes not found in this image\n"); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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64 exit(0); |
b8753e705e1a
rfcap-grep.c hack-utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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65 } |