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This commit is contained in:
Marek Marczykowski-Górecki 2013-12-27 06:06:12 +01:00
parent b8588c4856
commit d84381b87f
2 changed files with 490 additions and 490 deletions
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838
qrexec/qrexec-agent.c
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142
qrexec/qrexec-client-vm.c
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@ -29,92 +29,92 @@
#include "qrexec.h" #include "qrexec.h"
int connect_unix_socket() int connect_unix_socket()
{ {
int s, len; int s, len;
struct sockaddr_un remote; struct sockaddr_un remote;
if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) { if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
perror("socket"); perror("socket");
return -1; return -1;
} }
remote.sun_family = AF_UNIX; remote.sun_family = AF_UNIX;
strncpy(remote.sun_path, QREXEC_AGENT_FDPASS_PATH, strncpy(remote.sun_path, QREXEC_AGENT_FDPASS_PATH,
sizeof(remote.sun_path)); sizeof(remote.sun_path));
len = strlen(remote.sun_path) + sizeof(remote.sun_family); len = strlen(remote.sun_path) + sizeof(remote.sun_family);
if (connect(s, (struct sockaddr *) &remote, len) == -1) { if (connect(s, (struct sockaddr *) &remote, len) == -1) {
perror("connect"); perror("connect");
exit(1); exit(1);
} }
return s; return s;
} }
char *get_program_name(char *prog) char *get_program_name(char *prog)
{ {
char *basename = rindex(prog, '/'); char *basename = rindex(prog, '/');
if (basename) if (basename)
return basename + 1; return basename + 1;
else else
return prog; return prog;
} }
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
int trigger_fd; int trigger_fd;
struct trigger_connect_params params; struct trigger_connect_params params;
int local_fd[3], remote_fd[3]; int local_fd[3], remote_fd[3];
int i; int i;
char *abs_exec_path; char *abs_exec_path;
if (argc < 4) { if (argc < 4) {
fprintf(stderr, fprintf(stderr,
"usage: %s target_vmname program_ident local_program [local program arguments]\n", "usage: %s target_vmname program_ident local_program [local program arguments]\n",
argv[0]); argv[0]);
exit(1); exit(1);
} }
trigger_fd = open(QREXEC_AGENT_TRIGGER_PATH, O_WRONLY); trigger_fd = open(QREXEC_AGENT_TRIGGER_PATH, O_WRONLY);
if (trigger_fd < 0) { if (trigger_fd < 0) {
perror("open " QREXEC_AGENT_TRIGGER_PATH); perror("open " QREXEC_AGENT_TRIGGER_PATH);
exit(1); exit(1);
} }
for (i = 0; i < 3; i++) { for (i = 0; i < 3; i++) {
local_fd[i] = connect_unix_socket(); local_fd[i] = connect_unix_socket();
if (read(local_fd[i], &remote_fd[i], sizeof(remote_fd[i])) != sizeof(remote_fd[i])) { if (read(local_fd[i], &remote_fd[i], sizeof(remote_fd[i])) != sizeof(remote_fd[i])) {
perror("read client fd"); perror("read client fd");
exit(1); exit(1);
} }
if (i != 2 || getenv("PASS_LOCAL_STDERR")) { if (i != 2 || getenv("PASS_LOCAL_STDERR")) {
char *env; char *env;
if (asprintf(&env, "SAVED_FD_%d=%d", i, dup(i)) < 0) { if (asprintf(&env, "SAVED_FD_%d=%d", i, dup(i)) < 0) {
perror("prepare SAVED_FD_"); perror("prepare SAVED_FD_");
exit(1); exit(1);
} }
putenv(env); putenv(env);
dup2(local_fd[i], i); dup2(local_fd[i], i);
close(local_fd[i]); close(local_fd[i]);
} }
} }
memset(&params, 0, sizeof(params)); memset(&params, 0, sizeof(params));
strncpy(params.exec_index, argv[2], sizeof(params.exec_index)); strncpy(params.exec_index, argv[2], sizeof(params.exec_index));
strncpy(params.target_vmname, argv[1], strncpy(params.target_vmname, argv[1],
sizeof(params.target_vmname)); sizeof(params.target_vmname));
snprintf(params.process_fds.ident, snprintf(params.process_fds.ident,
sizeof(params.process_fds.ident), "%d %d %d", sizeof(params.process_fds.ident), "%d %d %d",
remote_fd[0], remote_fd[1], remote_fd[2]); remote_fd[0], remote_fd[1], remote_fd[2]);
if (write(trigger_fd, &params, sizeof(params)) < 0) { if (write(trigger_fd, &params, sizeof(params)) < 0) {
if (!getenv("PASS_LOCAL_STDERR")) if (!getenv("PASS_LOCAL_STDERR"))
perror("write to agent"); perror("write to agent");
exit(1); exit(1);
} }
close(trigger_fd); close(trigger_fd);
abs_exec_path = strdup(argv[3]); abs_exec_path = strdup(argv[3]);
argv[3] = get_program_name(argv[3]); argv[3] = get_program_name(argv[3]);
execv(abs_exec_path, argv + 3); execv(abs_exec_path, argv + 3);
perror("execv"); perror("execv");
return 1; return 1;
} }