| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <string.h> |
| |
| char global_cmpval[] = "GLOBALVARIABLE"; |
| |
| int main(int argc, char **argv) { |
| |
| char *input = argv[1], *buf, buffer[20]; |
| char cmpval[] = "LOCALVARIABLE"; |
| char shortval[4] = "abc"; |
| |
| if (argc < 2) { |
| |
| ssize_t ret = read(0, buffer, sizeof(buffer) - 1); |
| buffer[ret] = 0; |
| input = buffer; |
| |
| } |
| |
| if (strcmp(input, "LIBTOKENCAP") == 0) |
| printf("your string was LIBTOKENCAP\n"); |
| else if (strcmp(input, "BUGMENOT") == 0) |
| printf("your string was BUGMENOT\n"); |
| else if (strncmp(input, "BANANA", 3) == 0) |
| printf("your string started with BAN\n"); |
| else if (strcmp(input, "APRI\0COT") == 0) |
| printf("your string was APRI\n"); |
| else if (strcasecmp(input, "Kiwi") == 0) |
| printf("your string was Kiwi\n"); |
| else if (strstr(input, "tsala") == 0) |
| printf("your string is a fruit salad\n"); |
| else if (strncasecmp(input, "avocado", 9) == 0) |
| printf("your string was avocado\n"); |
| else if (strncasecmp(input, "Grapes", argc > 2 ? atoi(argv[2]) : 3) == 0) |
| printf("your string was a prefix of Grapes\n"); |
| else if (strcmp(input, "BUFFEROVERFLOW") == 0) { |
| |
| buf = (char *)malloc(16); |
| strcpy(buf, "TEST"); |
| strcat(buf, input); |
| printf("This will only crash with libdislocator: %s\n", buf); |
| |
| } else if (*(unsigned int *)input == 0xabadcafe) |
| |
| printf("GG you eat cmp tokens for breakfast!\n"); |
| else if (memcmp(cmpval, input, 8) == 0) |
| printf("local var memcmp works!\n"); |
| else if (memcmp(shortval, input, 4) == 0) |
| printf("short local var memcmp works!\n"); |
| else if (memcmp(global_cmpval, input, sizeof(global_cmpval)) == 0) |
| printf("global var memcmp works!\n"); |
| else if (strncasecmp("-h", input, 2) == 0) |
| printf("this is not the help you are looking for\n"); |
| else |
| printf("I do not know your string\n"); |
| |
| return 0; |
| |
| } |
| |