mcookie: change coding style
Now in align with README.devel. Signed-off-by: Sami Kerola <kerolasa@iki.fi>
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177f48fa0c
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e6ebab66d4
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@ -18,167 +18,177 @@
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*
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*/
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#include "c.h"
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#include "md5.h"
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#include "nls.h"
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#include <fcntl.h>
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#include <getopt.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include "md5.h"
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#include <sys/time.h>
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#include <unistd.h>
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#include "nls.h"
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#include <getopt.h>
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#include "c.h"
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#define BUFFERSIZE 4096
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#define BUFFERSIZE 4096
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struct rngs {
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const char *path;
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int minlength, maxlength;
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const char *path;
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int minlength, maxlength;
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} rngs[] = {
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{ "/dev/random", 16, 16 }, /* 16 bytes = 128 bits suffice */
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{ "/proc/interrupts", 0, 0 },
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{ "/proc/slabinfo", 0, 0 },
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{ "/proc/stat", 0, 0 },
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{ "/dev/urandom", 32, 64 },
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{"/dev/random", 16, 16}, /* 16 bytes = 128 bits suffice */
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{"/proc/interrupts", 0, 0},
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{"/proc/slabinfo", 0, 0},
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{"/proc/stat", 0, 0},
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{"/dev/urandom", 32, 64},
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};
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#define RNGS (sizeof(rngs)/sizeof(struct rngs))
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int Verbose = 0;
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/* The basic function to hash a file */
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static off_t
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hash_file(struct MD5Context *ctx, int fd)
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static off_t hash_file(struct MD5Context *ctx, int fd)
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{
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off_t count = 0;
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ssize_t r;
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unsigned char buf[BUFFERSIZE];
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off_t count = 0;
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ssize_t r;
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unsigned char buf[BUFFERSIZE];
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while ((r = read(fd, buf, sizeof(buf))) > 0) {
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MD5Update(ctx, buf, r);
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count += r;
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}
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/* Separate files with a null byte */
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buf[0] = 0;
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MD5Update(ctx, buf, 1);
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return count;
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while ((r = read(fd, buf, sizeof(buf))) > 0) {
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MD5Update(ctx, buf, r);
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count += r;
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}
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/* Separate files with a null byte */
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buf[0] = '\0';
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MD5Update(ctx, buf, 1);
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return count;
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}
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static void __attribute__ ((__noreturn__)) usage(FILE * out)
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{
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fprintf(out, _("Usage: %s [options]\n"),
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program_invocation_short_name);
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fprintf(out, _("Usage: %s [options]\n"),
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program_invocation_short_name);
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fprintf(out, _("\nOptions:\n"
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" -f, --file=FILE use file as a cookie seed\n"
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" -v, --verbose explain what is being done\n"
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" -V, --version output version information and exit\n"
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" -h, --help display this help and exit\n"));
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fprintf(out, _("\nOptions:\n"
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" -f, --file=FILE use file as a cookie seed\n"
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" -v, --verbose explain what is being done\n"
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" -V, --version output version information and exit\n"
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" -h, --help display this help and exit\n"));
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exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
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exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
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}
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int main( int argc, char **argv )
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int main(int argc, char **argv)
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{
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size_t i;
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struct MD5Context ctx;
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unsigned char digest[16];
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unsigned char buf[BUFFERSIZE];
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int fd;
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int c;
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pid_t pid;
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char *file = NULL;
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int r;
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struct timeval tv;
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struct timezone tz;
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size_t i;
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struct MD5Context ctx;
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unsigned char digest[16];
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unsigned char buf[BUFFERSIZE];
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int fd;
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int c;
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pid_t pid;
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char *file = NULL;
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int verbose = 0;
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int r;
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struct timeval tv;
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struct timezone tz;
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static const struct option longopts[] = {
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{"file", required_argument, NULL, 'f'},
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{"verbose", no_argument, NULL, 'v'},
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{"version", no_argument, NULL, 'V'},
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{"help", no_argument, NULL, 'h'},
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{NULL, 0, NULL, 0}
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};
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static const struct option longopts[] = {
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{"file", required_argument, NULL, 'f'},
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{"verbose", no_argument, NULL, 'v'},
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{"version", no_argument, NULL, 'V'},
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{"help", no_argument, NULL, 'h'},
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{NULL, 0, NULL, 0}
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};
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setlocale(LC_ALL, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE);
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setlocale(LC_ALL, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE);
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while ((c = getopt_long(argc, argv, "f:vVh", longopts, NULL)) != -1)
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switch (c) {
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case 'v':
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Verbose = 1;
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break;
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case 'f':
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file = optarg;
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break;
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case 'V':
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printf(_("%s from %s\n"), program_invocation_short_name,
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PACKAGE_STRING);
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return EXIT_SUCCESS;
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case 'h':
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usage(stdout);
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default:
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usage(stderr);
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}
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while ((c =
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getopt_long(argc, argv, "f:vVh", longopts, NULL)) != -1)
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switch (c) {
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case 'v':
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verbose = 1;
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break;
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case 'f':
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file = optarg;
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break;
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case 'V':
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printf(_("%s from %s\n"),
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program_invocation_short_name,
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PACKAGE_STRING);
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return EXIT_SUCCESS;
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case 'h':
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usage(stdout);
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default:
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usage(stderr);
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}
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MD5Init( &ctx );
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gettimeofday( &tv, &tz );
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MD5Update( &ctx, (unsigned char *)&tv, sizeof( tv ) );
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MD5Init(&ctx);
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gettimeofday(&tv, &tz);
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MD5Update(&ctx, (unsigned char *) &tv, sizeof(tv));
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pid = getppid();
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MD5Update( &ctx, (unsigned char *)&pid, sizeof( pid ));
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pid = getpid();
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MD5Update( &ctx, (unsigned char *)&pid, sizeof( pid ));
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pid = getppid();
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MD5Update(&ctx, (unsigned char *) &pid, sizeof(pid));
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pid = getpid();
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MD5Update(&ctx, (unsigned char *) &pid, sizeof(pid));
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if (file) {
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int count = 0;
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if (file[0] == '-' && !file[1])
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fd = STDIN_FILENO;
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else
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fd = open( file, O_RDONLY );
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if (file) {
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int count = 0;
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if (fd < 0) {
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warn( _("Could not open %s"), file );
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} else {
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count = hash_file( &ctx, fd );
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if (Verbose)
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fprintf( stderr, _("Got %d bytes from %s\n"), count, file );
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if (file[0] == '-' && !file[1])
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fd = STDIN_FILENO;
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else
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fd = open(file, O_RDONLY);
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if (fd != STDIN_FILENO)
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if(close( fd ))
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err(EXIT_FAILURE, _("closing %s failed"), file);
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}
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}
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if (fd < 0) {
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warn(_("Could not open %s"), file);
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} else {
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count = hash_file(&ctx, fd);
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if (verbose)
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fprintf(stderr,
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_("Got %d bytes from %s\n"), count,
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file);
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for (i = 0; i < RNGS; i++) {
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if ((fd = open( rngs[i].path, O_RDONLY|O_NONBLOCK )) >= 0) {
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int count = sizeof(buf);
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if (fd != STDIN_FILENO)
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if (close(fd))
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err(EXIT_FAILURE,
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_("closing %s failed"), file);
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}
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}
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if (rngs[i].maxlength && count > rngs[i].maxlength)
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count = rngs[i].maxlength;
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r = read( fd, buf, count );
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if (r > 0)
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MD5Update( &ctx, buf, r );
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else
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r = 0;
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close( fd );
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if (Verbose)
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fprintf( stderr, _("Got %d bytes from %s\n"), r, rngs[i].path );
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if (rngs[i].minlength && r >= rngs[i].minlength)
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break;
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} else if (Verbose)
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warn( _("Could not open %s"), rngs[i].path );
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}
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for (i = 0; i < RNGS; i++) {
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if ((fd = open(rngs[i].path, O_RDONLY | O_NONBLOCK)) >= 0) {
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int count = sizeof(buf);
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MD5Final( digest, &ctx );
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for (i = 0; i < 16; i++) printf( "%02x", digest[i] );
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putchar ( '\n' );
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/*
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* The following is important for cases like disk full, so shell scripts
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* can bomb out properly rather than think they succeeded.
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*/
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if (fflush(stdout) < 0 || fclose(stdout) < 0)
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return EXIT_FAILURE;
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if (rngs[i].maxlength && count > rngs[i].maxlength)
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count = rngs[i].maxlength;
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r = read(fd, buf, count);
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if (r > 0)
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MD5Update(&ctx, buf, r);
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else
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r = 0;
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close(fd);
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if (verbose)
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fprintf(stderr,
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_("Got %d bytes from %s\n"), r,
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rngs[i].path);
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if (rngs[i].minlength && r >= rngs[i].minlength)
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break;
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} else if (verbose)
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warn(_("Could not open %s"), rngs[i].path);
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}
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return EXIT_SUCCESS;
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MD5Final(digest, &ctx);
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for (i = 0; i < 16; i++)
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printf("%02x", digest[i]);
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putchar('\n');
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/*
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* The following is important for cases like disk full,
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* so shell scripts can bomb out properly rather than
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* think they succeeded.
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*/
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if (fflush(stdout) < 0 || fclose(stdout) < 0)
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return EXIT_FAILURE;
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return EXIT_SUCCESS;
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}
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