Created
February 23, 2014 15:00
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Call UNIX crypt function from command line. Compile using: $gcc crypt.c -lcrypt -o crypt
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#include <stdio.h> | |
#include <unistd.h> | |
#include <crypt.h> | |
int main(int argc, char **argv) { | |
int option; | |
int debug = 0; | |
const char *salt; | |
const char *pass; | |
while ((option = getopt(argc, argv, "p:s:d")) != -1) { | |
switch (option) { | |
case 'p': | |
pass = optarg; | |
break; | |
case 's': | |
salt = optarg; | |
break; | |
case 'd': | |
debug = 1; | |
break; | |
default: | |
fprintf(stderr, "unknown parameter\n"); | |
return 1; | |
} | |
} | |
if (pass == NULL) { | |
fprintf(stderr, "password not specified\n"); | |
return 1; | |
} | |
if (salt == NULL) { | |
fprintf(stderr, "salt not specified\n"); | |
return 1; | |
} | |
if (debug) { | |
fprintf(stdout, "password:%s\nsalt:%s\n\n", pass, salt); | |
} | |
const char *out = crypt(pass, salt); | |
if (out != NULL) { | |
fprintf(stdout, "%s\n", out); | |
} else { | |
fprintf(stderr, "computation failed\n"); | |
} | |
return 0; | |
} |
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