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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"
int connect_unix_socket()
{
int s, len;
struct sockaddr_un remote;
int s, len;
struct sockaddr_un remote;
if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
perror("socket");
return -1;
}
if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
perror("socket");
return -1;
}
remote.sun_family = AF_UNIX;
strncpy(remote.sun_path, QREXEC_AGENT_FDPASS_PATH,
sizeof(remote.sun_path));
len = strlen(remote.sun_path) + sizeof(remote.sun_family);
if (connect(s, (struct sockaddr *) &remote, len) == -1) {
perror("connect");
exit(1);
}
return s;
remote.sun_family = AF_UNIX;
strncpy(remote.sun_path, QREXEC_AGENT_FDPASS_PATH,
sizeof(remote.sun_path));
len = strlen(remote.sun_path) + sizeof(remote.sun_family);
if (connect(s, (struct sockaddr *) &remote, len) == -1) {
perror("connect");
exit(1);
}
return s;
}
char *get_program_name(char *prog)
{
char *basename = rindex(prog, '/');
if (basename)
return basename + 1;
else
return prog;
char *basename = rindex(prog, '/');
if (basename)
return basename + 1;
else
return prog;
}
int main(int argc, char **argv)
{
int trigger_fd;
struct trigger_connect_params params;
int local_fd[3], remote_fd[3];
int i;
char *abs_exec_path;
int trigger_fd;
struct trigger_connect_params params;
int local_fd[3], remote_fd[3];
int i;
char *abs_exec_path;
if (argc < 4) {
fprintf(stderr,
"usage: %s target_vmname program_ident local_program [local program arguments]\n",
argv[0]);
exit(1);
}
if (argc < 4) {
fprintf(stderr,
"usage: %s target_vmname program_ident local_program [local program arguments]\n",
argv[0]);
exit(1);
}
trigger_fd = open(QREXEC_AGENT_TRIGGER_PATH, O_WRONLY);
if (trigger_fd < 0) {
perror("open " QREXEC_AGENT_TRIGGER_PATH);
exit(1);
}
trigger_fd = open(QREXEC_AGENT_TRIGGER_PATH, O_WRONLY);
if (trigger_fd < 0) {
perror("open " QREXEC_AGENT_TRIGGER_PATH);
exit(1);
}
for (i = 0; i < 3; i++) {
local_fd[i] = connect_unix_socket();
if (read(local_fd[i], &remote_fd[i], sizeof(remote_fd[i])) != sizeof(remote_fd[i])) {
perror("read client fd");
exit(1);
}
if (i != 2 || getenv("PASS_LOCAL_STDERR")) {
char *env;
if (asprintf(&env, "SAVED_FD_%d=%d", i, dup(i)) < 0) {
perror("prepare SAVED_FD_");
exit(1);
}
putenv(env);
dup2(local_fd[i], i);
close(local_fd[i]);
}
}
for (i = 0; i < 3; i++) {
local_fd[i] = connect_unix_socket();
if (read(local_fd[i], &remote_fd[i], sizeof(remote_fd[i])) != sizeof(remote_fd[i])) {
perror("read client fd");
exit(1);
}
if (i != 2 || getenv("PASS_LOCAL_STDERR")) {
char *env;
if (asprintf(&env, "SAVED_FD_%d=%d", i, dup(i)) < 0) {
perror("prepare SAVED_FD_");
exit(1);
}
putenv(env);
dup2(local_fd[i], i);
close(local_fd[i]);
}
}
memset(&params, 0, sizeof(params));
strncpy(params.exec_index, argv[2], sizeof(params.exec_index));
strncpy(params.target_vmname, argv[1],
sizeof(params.target_vmname));
snprintf(params.process_fds.ident,
sizeof(params.process_fds.ident), "%d %d %d",
remote_fd[0], remote_fd[1], remote_fd[2]);
memset(&params, 0, sizeof(params));
strncpy(params.exec_index, argv[2], sizeof(params.exec_index));
strncpy(params.target_vmname, argv[1],
sizeof(params.target_vmname));
snprintf(params.process_fds.ident,
sizeof(params.process_fds.ident), "%d %d %d",
remote_fd[0], remote_fd[1], remote_fd[2]);
if (write(trigger_fd, &params, sizeof(params)) < 0) {
if (!getenv("PASS_LOCAL_STDERR"))
perror("write to agent");
exit(1);
}
if (write(trigger_fd, &params, sizeof(params)) < 0) {
if (!getenv("PASS_LOCAL_STDERR"))
perror("write to agent");
exit(1);
}
close(trigger_fd);
close(trigger_fd);
abs_exec_path = strdup(argv[3]);
argv[3] = get_program_name(argv[3]);
execv(abs_exec_path, argv + 3);
perror("execv");
return 1;
abs_exec_path = strdup(argv[3]);
argv[3] = get_program_name(argv[3]);
execv(abs_exec_path, argv + 3);
perror("execv");
return 1;
}