ref: 0a460e1722c50e31653359f8a86fe0b606d2b513
dir: /sys/src/libauth/auth_getuserpasswd.c/
#include <u.h> #include <libc.h> #include <auth.h> #include "authlocal.h" enum { ARgiveup = 100, }; static int dorpc(AuthRpc *rpc, char *verb, char *val, int len, AuthGetkey *getkey) { int ret; for(;;){ if((ret = auth_rpc(rpc, verb, val, len)) != ARneedkey && ret != ARbadkey) return ret; if(getkey == nil) return ARgiveup; /* don't know how */ if((*getkey)(rpc->arg) < 0) return ARgiveup; /* user punted */ } } UserPasswd* auth_getuserpasswd(AuthGetkey *getkey, char *fmt, ...) { AuthRpc *rpc; char *f[3], *p, *params; int fd; va_list arg; UserPasswd *up; up = nil; rpc = nil; params = nil; fd = open("/mnt/factotum/rpc", ORDWR); if(fd < 0) goto out; rpc = auth_allocrpc(fd); if(rpc == nil) goto out; quotefmtinstall(); /* just in case */ va_start(arg, fmt); params = vsmprint(fmt, arg); va_end(arg); if(params == nil) goto out; if(dorpc(rpc, "start", params, strlen(params), getkey) != ARok || dorpc(rpc, "read", nil, 0, getkey) != ARok) goto out; rpc->arg[rpc->narg] = '\0'; if(tokenize(rpc->arg, f, 2) != 2){ werrstr("bad answer from factotum"); goto out; } up = malloc(sizeof(*up)+rpc->narg+1); if(up == nil) goto out; p = (char*)&up[1]; strcpy(p, f[0]); up->user = p; p += strlen(p)+1; strcpy(p, f[1]); up->passwd = p; out: free(params); auth_freerpc(rpc); close(fd); return up; }