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QMP commands don't need to be escaped since converting them to json also escapes special characters. When a QMP command fails, however, libvirt falls back to HMP commands. These fallback functions (qemuMonitorText*) do their own escaping, and pass the result directly to qemuMonitorHMPCommandWithFd. If the monitor is in json mode, these pre-escaped commands will be escaped again when converted to json, which can result in the wrong arguments being sent. For example, a filename test\file would be sent in json as test\\file. This prevented attaching an image file with a " or \ in its name in qemu 1.0.50, and also broke rbd attachment (which uses backslashes to escape some internal arguments.) Reported-by: Masuko Tomoya <tomoya.masuko@gmail.com> Signed-off-by: Josh Durgin <josh.durgin@dreamhost.com> Signed-off-by: Eric Blake <eblake@redhat.com>
119 lines
3.2 KiB
C
119 lines
3.2 KiB
C
#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#ifdef WITH_QEMU
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# include "internal.h"
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# include "memory.h"
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# include "testutils.h"
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# include "util.h"
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# include "qemu/qemu_monitor.h"
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struct testEscapeString
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{
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const char *unescaped;
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const char *escaped;
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};
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static struct testEscapeString escapeStrings[] = {
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{ "", "" },
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{ " ", " " },
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{ "\\", "\\\\" },
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{ "\n", "\\n" },
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{ "\r", "\\r" },
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{ "\"", "\\\"" },
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{ "\"\"\"\\\\\n\r\\\\\n\r\"\"\"", "\\\"\\\"\\\"\\\\\\\\\\n\\r\\\\\\\\\\n\\r\\\"\\\"\\\"" },
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{ "drive_add dummy file=foo\\", "drive_add dummy file=foo\\\\" },
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{ "block info", "block info" },
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{ "set_password \":\\\"\"", "set_password \\\":\\\\\\\"\\\"" },
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};
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static int testEscapeArg(const void *data ATTRIBUTE_UNUSED)
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{
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int i;
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char *escaped = NULL;
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for (i = 0; i < ARRAY_CARDINALITY(escapeStrings); ++i) {
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escaped = qemuMonitorEscapeArg(escapeStrings[i].unescaped);
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if (!escaped) {
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if (virTestGetDebug() > 0) {
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fprintf(stderr, "\nUnescaped string [%s]\n",
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escapeStrings[i].unescaped);
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fprintf(stderr, "Expect result [%s]\n",
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escapeStrings[i].escaped);
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fprintf(stderr, "Actual result [(null)]\n");
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}
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return -1;
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}
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if (STRNEQ(escapeStrings[i].escaped, escaped)) {
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virtTestDifference(stderr, escapeStrings[i].escaped, escaped);
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VIR_FREE(escaped);
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return -1;
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}
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VIR_FREE(escaped);
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}
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return 0;
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}
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static int testUnescapeArg(const void *data ATTRIBUTE_UNUSED)
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{
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int i;
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char *unescaped = NULL;
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for (i = 0; i < ARRAY_CARDINALITY(escapeStrings); ++i) {
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unescaped = qemuMonitorUnescapeArg(escapeStrings[i].escaped);
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if (!unescaped) {
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if (virTestGetDebug() > 0) {
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fprintf(stderr, "\nEscaped string [%s]\n",
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escapeStrings[i].escaped);
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fprintf(stderr, "Expect result [%s]\n",
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escapeStrings[i].unescaped);
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fprintf(stderr, "Actual result [(null)]\n");
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}
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return -1;
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}
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if (STRNEQ(escapeStrings[i].unescaped, unescaped)) {
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virtTestDifference(stderr, escapeStrings[i].unescaped, unescaped);
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VIR_FREE(unescaped);
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return -1;
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}
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VIR_FREE(unescaped);
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}
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return 0;
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}
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static int
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mymain(void)
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{
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int result = 0;
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# define DO_TEST(_name) \
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do { \
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if (virtTestRun("qemu monitor "#_name, 1, test##_name, \
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NULL) < 0) { \
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result = -1; \
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} \
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} while (0)
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DO_TEST(EscapeArg);
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DO_TEST(UnescapeArg);
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return result == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
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}
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VIRT_TEST_MAIN(mymain)
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#else
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# include "testutils.h"
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int main(void)
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{
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return EXIT_AM_SKIP;
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}
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#endif /* WITH_QEMU */
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