diff options
Diffstat (limited to 'qarsh/qarsh.c')
| -rw-r--r-- | qarsh/qarsh.c | 56 |
1 files changed, 54 insertions, 2 deletions
diff --git a/qarsh/qarsh.c b/qarsh/qarsh.c index 20e7023..0b91f5d 100644 --- a/qarsh/qarsh.c +++ b/qarsh/qarsh.c @@ -18,6 +18,7 @@ #include <netinet/in.h> #include <netdb.h> #include <syslog.h> +#include <pwd.h> #include "sockutil.h" @@ -31,7 +32,7 @@ int qarsh_fd = -1; /* The control connection to qarshd */ void usage() { - printf("Usage: qarsh hostname cmdline ...\n"); + printf("qarsh: [user[.group]@]hostname cmdline ...\n"); } char * @@ -58,6 +59,25 @@ copyargs(char **argv) return args; } +void +set_remote_user(char *user, char *group) +{ + struct qa_packet *qp; + + qp = make_qp_setuser(user, group); + qp->qp_seq = 1; + send_packet(qarsh_fd, qp); + qpfree(qp); + qp = recv_packet(qarsh_fd); + if (qp && qp->qp_type == QP_RETURNCODE + && qp->qp_returncode.qp_rc == -1) { + + fprintf(stderr, "Remote side failed, %s\n", + qp->qp_returncode.qp_strerror); + close(qarsh_fd); + exit(125); + } +} int run_remote_cmd(char *cmdline) @@ -219,13 +239,22 @@ main(int argc, char *argv[]) int c; int port = 5008; char *host; + char *remuser = NULL; + char *remgroup = NULL; char *args; + struct passwd *pw; int ret; openlog("qarsh", LOG_PID, LOG_DAEMON); - while ((c = getopt(argc, argv, "+p:")) != -1) { + while ((c = getopt(argc, argv, "+p:l:g:")) != -1) { switch (c) { + case 'l': + remuser = strdup(optarg); + break; + case 'g': + remgroup = strdup(optarg); + break; case 'p': port = atoi(optarg); break; @@ -240,6 +269,27 @@ main(int argc, char *argv[]) usage(); exit(1); } + /* check for user and group in form [user[.group]@]hostname */ + { + char *sp; + + if ((sp = strchr(host, '@'))) { + remuser = host; + host = sp+1; + *sp = '\0'; + } + if (remuser && (sp = strchr(remuser, '.'))) { + remgroup = sp+1; + *sp = '\0'; + } + } + if (!(pw = getpwuid(getuid()))) { + fprintf(stderr, "qarsh: unknown user id.\n"); + exit(1); + } + if (remuser == NULL) { + remuser = strdup(pw->pw_name); + } argc -= optind; argv += optind; @@ -259,6 +309,8 @@ main(int argc, char *argv[]) return 127; } + set_remote_user(remuser, remgroup); + ret = run_remote_cmd(args); close(qarsh_fd); free(args); |