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Make qubesd-query-fast support keyword targets

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Specifically, allow to use `@default` and `@adminvm` as a target.
This commit is contained in:
Marek Marczykowski-Górecki 2019-09-14 23:32:31 +02:00
parent 45a6252c06
commit d2f4b5d694
No known key found for this signature in database
GPG Key ID: 063938BA42CFA724
1 changed files with 22 additions and 3 deletions
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25
qubes-rpc/qubesd-query-fast.c
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@ -1,3 +1,4 @@
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
@ -22,7 +23,10 @@ void write_wrapper(int fd, char *data, size_t len) {
int main(int argc, char **argv) {
char *source_domain = getenv("QREXEC_REMOTE_DOMAIN");
char *target_domain = getenv("QREXEC_REQUESTED_TARGET");
char *target_domain = NULL;
char *target_domain_type = getenv("QREXEC_REQUESTED_TARGET_TYPE");
char *target_domain_name = getenv("QREXEC_REQUESTED_TARGET");
char *target_domain_keyword = getenv("QREXEC_REQUESTED_TARGET_KEYWORD");
char *service_name = strrchr(argv[0], '/');
int fd;
char buf[4096];
@ -35,12 +39,12 @@ int main(int argc, char **argv) {
if (service_name)
service_name++;
if (!source_domain || !target_domain || !service_name || argc > 2) {
if (!source_domain || !target_domain_type || !service_name || argc > 2) {
fprintf(stderr, "Usage: %s [service-argument]\n", argv[0]);
fprintf(stderr, "\n");
fprintf(stderr, "Expected environment variables:\n");
fprintf(stderr, " - QREXEC_REMOTE_DOMAIN - source domain for the call\n");
fprintf(stderr, " - QREXEC_REQUESTED_TARGET - target domain for the call\n");
fprintf(stderr, " - QREXEC_REQUESTED_TARGET_TYPE - target domain for the call\n");
fprintf(stderr, "\n");
fprintf(stderr, "Additionally, this program assumes being called with desired service name as argv[0] (use symlink)\n");
return 1;
@ -57,6 +61,21 @@ int main(int argc, char **argv) {
return 1;
}
if (strcmp(target_domain_type, "keyword") == 0) {
// translate @adminvm back to dom0
if (strcmp(target_domain_keyword, "adminvm") == 0)
target_domain = "dom0";
else if (strcmp(target_domain_keyword, "default") == 0)
target_domain = "";
else {
fprintf(stderr, "Unsupported keyword: %s", target_domain_keyword);
return 1;
}
} else
target_domain = target_domain_name;
assert(target_domain);
// write parameters, including trailing zero as separator
write_wrapper(fd, source_domain, strlen(source_domain) + 1);
write_wrapper(fd, service_name, strlen(service_name) + 1);