ref: 53fa826a8a695bcfade5c47f636f719c71e96b98
dir: /sys/src/cmd/auth/passwd.c/
#include <u.h> #include <libc.h> #include <bio.h> #include <authsrv.h> #include "authcmdlib.h" void main(int argc, char **argv) { int fd, n, dp9ik; Ticketreq tr; Ticket t; Passwordreq pr; Authkey key; char buf[512]; char *s, *user; dp9ik = 1; ARGBEGIN{ case '1': dp9ik = 0; break; default: fprint(2, "%s [-1]\n", argv0); exits("usage"); }ARGEND argv0 = "passwd"; user = getuser(); private(); s = nil; if(argc > 0){ user = argv[0]; s = strchr(user, '@'); if(s != nil) *s++ = 0; if(*user == 0) user = getuser(); } fd = authdial(nil, s); if(fd < 0) error("authdial: %r"); memset(&tr, 0, sizeof(tr)); strncpy(tr.uid, user, sizeof(tr.uid)-1); tr.type = AuthPass; /* * get a password from the user and try to decrypt the * ticket. If it doesn't work we've got a bad password, * give up. */ memset(&pr, 0, sizeof(pr)); getpass(&key, pr.old, 0, 0); if(dp9ik){ authpak_hash(&key, tr.uid); if(_asgetpakkey(fd, &tr, &key) < 0) error("%r"); } if(_asrequest(fd, &tr) < 0) error("%r"); if(_asgetresp(fd, &t, nil, &key) < 0) error("%r"); if(t.num != AuthTp || strcmp(t.cuid, tr.uid) != 0) error("bad password"); /* loop trying new passwords */ for(;;){ memset(pr.new, 0, sizeof(pr.new)); if(answer("change Plan 9 Password?")) getpass(nil, pr.new, 0, 1); pr.changesecret = answer("change Inferno/POP secret?"); if(pr.changesecret){ if(answer("make it the same as your plan 9 password?")){ if(*pr.new) strcpy(pr.secret, pr.new); else strcpy(pr.secret, pr.old); } else { getpass(nil, pr.secret, 0, 1); } } pr.num = AuthPass; n = convPR2M(&pr, buf, sizeof(buf), &t); if(write(fd, buf, n) != n) error("AS protocol botch: %r"); if(_asrdresp(fd, buf, 0) == 0) break; fprint(2, "passwd: refused: %r\n"); } close(fd); exits(0); }