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* does this by attempting to execute a sequence
* of binaries, and then writing the password
* to STDIN of the binary that succeeds.
* ? generates passwords
* → mkpw is unlikely to be portable to non-POSIX
* systems, but should run fine on Linux as well
* as BSDs with getrandom() support.
*/
#include <unistd.h>
#include <sys/random.h>
#include <sys/syscall.h>
#include <stddef.h>
#include <stdint.h>
................................................................................
typedef enum bad {
ok = 0,
fail = 1,
bad_user,
bad_option,
bad_syntax,
bad_usage = 64, /* fleabsd idiom */
} bad;
typedef _Bool bool;
typedef unsigned long long iaia_word_type;
typedef bad iaia_error_type;
enum /* iaia errors */ {
................................................................................
char buf[len+1];
/* *buf = 0; */
unsigned char noise[len];
for (size_t i = 0; i<q; ++i) {
unsigned char* cur = noise;
syscall(SYS_getrandom, noise, len, 0);
/* getrandom(noise, len, 0); // android doesnt like it */
for(char* ptr = buf; ptr < buf + len; ++ptr, ++cur) {
*ptr = tbl[*cur % chars]; /* such a waste of entropy… :( */
}
buf[len] = '\n';
................................................................................
if (pipe(fds) != 0) return 63;
if (!fork()) {
close(fds[1]);
dup2(fds[0], 0);
if (clipboard_env != null) {
execvp(clipboard_env, (char* const[]){
clipboard_env, clipboard_env_arg, null});
return -1;
} else for(char* const** cmd = cbd_cmds; *cmd != null; ++cmd) {
execvp((*cmd)[0], *cmd);
}
return -1; /* exec failed */
} else {
close(fds[0]);
write(fds[1], buf, len);
write(fds[1], "\n", 1);
close(fds[1]);
}
}
# endif
return ok;
}
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|
* does this by attempting to execute a sequence
* of binaries, and then writing the password
* to STDIN of the binary that succeeds.
* ? generates passwords
* → mkpw is unlikely to be portable to non-POSIX
* systems, but should run fine on Linux as well
* as BSDs with getrandom() support.
* ! for getrandom() to work with the version of
* libc on my android phone, the getrandom() call
* had to be converted to use the syscall()
* interface. this is unlikely to cause problems,
* but should be kept in mind.
*/
#include <unistd.h>
#include <sys/random.h>
#include <sys/syscall.h>
#include <stddef.h>
#include <stdint.h>
................................................................................
typedef enum bad {
ok = 0,
fail = 1,
bad_user,
bad_option,
bad_syntax,
bad_entropy,
bad_copy,
bad_usage = 64, /* fleabsd idiom */
} bad;
typedef _Bool bool;
typedef unsigned long long iaia_word_type;
typedef bad iaia_error_type;
enum /* iaia errors */ {
................................................................................
char buf[len+1];
/* *buf = 0; */
unsigned char noise[len];
for (size_t i = 0; i<q; ++i) {
unsigned char* cur = noise;
if(syscall(SYS_getrandom, noise, len, 0) == -1)
return bad_entropy;
/* getrandom(noise, len, 0); // android doesnt like it */
for(char* ptr = buf; ptr < buf + len; ++ptr, ++cur) {
*ptr = tbl[*cur % chars]; /* such a waste of entropy… :( */
}
buf[len] = '\n';
................................................................................
if (pipe(fds) != 0) return 63;
if (!fork()) {
close(fds[1]);
dup2(fds[0], 0);
if (clipboard_env != null) {
execvp(clipboard_env, (char* const[]){
clipboard_env, clipboard_env_arg, null});
return bad_copy;
} else for(char* const** cmd = cbd_cmds; *cmd != null; ++cmd) {
execvp((*cmd)[0], *cmd);
}
return bad_copy; /* exec failed */
} else {
close(fds[0]);
write(fds[1], buf, len);
write(fds[1], "\n", 1);
close(fds[1]);
}
}
# endif
return ok;
}
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