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testapp.c
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/* -*- Mode: C; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
#if 0
#undef NDEBUG
#include <pthread.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <assert.h>
#include <string.h>
#include <unistd.h>
#include <netinet/in.h>
#include <fcntl.h>
#include "config.h"
#include "cache.h"
#include "util.h"
#include "protocol_binary.h"
#define TMP_TEMPLATE "/tmp/test_file.XXXXXXX"
enum test_return { TEST_SKIP, TEST_PASS, TEST_FAIL };
static pid_t server_pid;
static in_port_t port;
static int sock;
static bool allow_closed_read = false;
static enum test_return cache_create_test(void)
{
cache_t *cache = cache_create("test", sizeof(uint32_t), sizeof(char*),
NULL, NULL);
assert(cache != NULL);
cache_destroy(cache);
return TEST_PASS;
}
const uint64_t constructor_pattern = 0xdeadcafebabebeef;
static int cache_constructor(void *buffer, void *notused1, int notused2) {
uint64_t *ptr = buffer;
*ptr = constructor_pattern;
return 0;
}
static enum test_return cache_constructor_test(void)
{
cache_t *cache = cache_create("test", sizeof(uint64_t), sizeof(uint64_t),
cache_constructor, NULL);
assert(cache != NULL);
uint64_t *ptr = cache_alloc(cache);
uint64_t pattern = *ptr;
cache_free(cache, ptr);
cache_destroy(cache);
return (pattern == constructor_pattern) ? TEST_PASS : TEST_FAIL;
}
static int cache_fail_constructor(void *buffer, void *notused1, int notused2) {
return 1;
}
static enum test_return cache_fail_constructor_test(void)
{
enum test_return ret = TEST_PASS;
cache_t *cache = cache_create("test", sizeof(uint64_t), sizeof(uint64_t),
cache_fail_constructor, NULL);
assert(cache != NULL);
uint64_t *ptr = cache_alloc(cache);
if (ptr != NULL) {
ret = TEST_FAIL;
}
cache_destroy(cache);
return ret;
}
static void *destruct_data = 0;
static void cache_destructor(void *buffer, void *notused) {
destruct_data = buffer;
}
static enum test_return cache_destructor_test(void)
{
cache_t *cache = cache_create("test", sizeof(uint32_t), sizeof(char*),
NULL, cache_destructor);
assert(cache != NULL);
char *ptr = cache_alloc(cache);
cache_free(cache, ptr);
cache_destroy(cache);
return (ptr == destruct_data) ? TEST_PASS : TEST_FAIL;
}
static enum test_return cache_reuse_test(void)
{
int ii;
cache_t *cache = cache_create("test", sizeof(uint32_t), sizeof(char*),
NULL, NULL);
char *ptr = cache_alloc(cache);
cache_free(cache, ptr);
for (ii = 0; ii < 100; ++ii) {
char *p = cache_alloc(cache);
assert(p == ptr);
cache_free(cache, ptr);
}
cache_destroy(cache);
return TEST_PASS;
}
static enum test_return cache_bulkalloc(size_t datasize)
{
cache_t *cache = cache_create("test", datasize, sizeof(char*),
NULL, NULL);
#define ITERATIONS 1024
void *ptr[ITERATIONS];
for (int ii = 0; ii < ITERATIONS; ++ii) {
ptr[ii] = cache_alloc(cache);
assert(ptr[ii] != 0);
memset(ptr[ii], 0xff, datasize);
}
for (int ii = 0; ii < ITERATIONS; ++ii) {
cache_free(cache, ptr[ii]);
}
#undef ITERATIONS
cache_destroy(cache);
return TEST_PASS;
}
static enum test_return test_issue_161(void)
{
enum test_return ret = cache_bulkalloc(1);
if (ret == TEST_PASS) {
ret = cache_bulkalloc(512);
}
return ret;
}
static enum test_return cache_redzone_test(void)
{
#ifndef HAVE_UMEM_H
cache_t *cache = cache_create("test", sizeof(uint32_t), sizeof(char*),
NULL, NULL);
/* Ignore SIGABRT */
struct sigaction old_action;
struct sigaction action = { .sa_handler = SIG_IGN, .sa_flags = 0};
sigemptyset(&action.sa_mask);
sigaction(SIGABRT, &action, &old_action);
/* check memory debug.. */
char *p = cache_alloc(cache);
char old = *(p - 1);
*(p - 1) = 0;
cache_free(cache, p);
assert(cache_error == -1);
*(p - 1) = old;
p[sizeof(uint32_t)] = 0;
cache_free(cache, p);
assert(cache_error == 1);
/* restore signal handler */
sigaction(SIGABRT, &old_action, NULL);
cache_destroy(cache);
return TEST_PASS;
#else
return TEST_SKIP;
#endif
}
static enum test_return test_safe_strtoul(void) {
uint32_t val;
assert(safe_strtoul("123", &val));
assert(val == 123);
assert(safe_strtoul("+123", &val));
assert(val == 123);
assert(!safe_strtoul("", &val)); // empty
assert(!safe_strtoul("123BOGUS", &val)); // non-numeric
assert(!safe_strtoul(" issue221", &val)); // non-numeric
/* Not sure what it does, but this works with ICC :/
assert(!safe_strtoul("92837498237498237498029383", &val)); // out of range
*/
// extremes:
assert(safe_strtoul("4294967295", &val)); // 2**32 - 1
assert(val == 4294967295L);
/* This actually works on 64-bit ubuntu
assert(!safe_strtoul("4294967296", &val)); // 2**32
*/
assert(!safe_strtoul("-1", &val)); // negative
return TEST_PASS;
}
static enum test_return test_safe_strtoull(void) {
uint64_t val;
assert(safe_strtoull("123", &val));
assert(val == 123);
assert(safe_strtoull("+123", &val));
assert(val == 123);
assert(!safe_strtoull("", &val)); // empty
assert(!safe_strtoull("123BOGUS", &val)); // non-numeric
assert(!safe_strtoull("92837498237498237498029383", &val)); // out of range
assert(!safe_strtoull(" issue221", &val)); // non-numeric
// extremes:
assert(safe_strtoull("18446744073709551615", &val)); // 2**64 - 1
assert(val == 18446744073709551615ULL);
assert(!safe_strtoull("18446744073709551616", &val)); // 2**64
assert(!safe_strtoull("-1", &val)); // negative
return TEST_PASS;
}
static enum test_return test_safe_strtoll(void) {
int64_t val;
assert(safe_strtoll("123", &val));
assert(val == 123);
assert(safe_strtoll("+123", &val));
assert(val == 123);
assert(safe_strtoll("-123", &val));
assert(val == -123);
assert(!safe_strtoll("", &val)); // empty
assert(!safe_strtoll("123BOGUS", &val)); // non-numeric
assert(!safe_strtoll("92837498237498237498029383", &val)); // out of range
assert(!safe_strtoll(" issue221", &val)); // non-numeric
// extremes:
assert(!safe_strtoll("18446744073709551615", &val)); // 2**64 - 1
assert(safe_strtoll("9223372036854775807", &val)); // 2**63 - 1
assert(val == 9223372036854775807LL);
/*
assert(safe_strtoll("-9223372036854775808", &val)); // -2**63
assert(val == -9223372036854775808LL);
*/
assert(!safe_strtoll("-9223372036854775809", &val)); // -2**63 - 1
// We'll allow space to terminate the string. And leading space.
assert(safe_strtoll(" 123 foo", &val));
assert(val == 123);
return TEST_PASS;
}
static enum test_return test_safe_strtol(void) {
int32_t val;
assert(safe_strtol("123", &val));
assert(val == 123);
assert(safe_strtol("+123", &val));
assert(val == 123);
assert(safe_strtol("-123", &val));
assert(val == -123);
assert(!safe_strtol("", &val)); // empty
assert(!safe_strtol("123BOGUS", &val)); // non-numeric
assert(!safe_strtol("92837498237498237498029383", &val)); // out of range
assert(!safe_strtol(" issue221", &val)); // non-numeric
// extremes:
/* This actually works on 64-bit ubuntu
assert(!safe_strtol("2147483648", &val)); // (expt 2.0 31.0)
*/
assert(safe_strtol("2147483647", &val)); // (- (expt 2.0 31) 1)
assert(val == 2147483647L);
/* This actually works on 64-bit ubuntu
assert(!safe_strtol("-2147483649", &val)); // (- (expt -2.0 31) 1)
*/
// We'll allow space to terminate the string. And leading space.
assert(safe_strtol(" 123 foo", &val));
assert(val == 123);
return TEST_PASS;
}
/**
* Function to start the server and let it listen on a random port
*
* @param port_out where to store the TCP port number the server is
* listening on
* @param daemon set to true if you want to run the memcached server
* as a daemon process
* @return the pid of the memcached server
*/
static pid_t start_server(in_port_t *port_out, bool daemon, int timeout) {
char environment[80];
snprintf(environment, sizeof(environment),
"MEMCACHED_PORT_FILENAME=/tmp/ports.%lu", (long)getpid());
char *filename= environment + strlen("MEMCACHED_PORT_FILENAME=");
char pid_file[80];
snprintf(pid_file, sizeof(pid_file), "/tmp/pid.%lu", (long)getpid());
remove(filename);
remove(pid_file);
#ifdef __sun
/* I want to name the corefiles differently so that they don't
overwrite each other
*/
char coreadm[128];
snprintf(coreadm, sizeof(coreadm),
"coreadm -p core.%%f.%%p %lu", (unsigned long)getpid());
system(coreadm);
#endif
pid_t pid = fork();
assert(pid != -1);
if (pid == 0) {
/* Child */
char *argv[20];
int arg = 0;
char tmo[24];
snprintf(tmo, sizeof(tmo), "%u", timeout);
putenv(environment);
#ifdef __sun
putenv("LD_PRELOAD=watchmalloc.so.1");
putenv("MALLOC_DEBUG=WATCH");
#endif
if (!daemon) {
argv[arg++] = "./timedrun";
argv[arg++] = tmo;
}
argv[arg++] = "./memcached-debug";
argv[arg++] = "-A";
argv[arg++] = "-p";
argv[arg++] = "-1";
argv[arg++] = "-U";
argv[arg++] = "0";
/* Handle rpmbuild and the like doing this as root */
if (getuid() == 0) {
argv[arg++] = "-u";
argv[arg++] = "root";
}
if (daemon) {
argv[arg++] = "-d";
argv[arg++] = "-P";
argv[arg++] = pid_file;
}
#ifdef MESSAGE_DEBUG
argv[arg++] = "-vvv";
#endif
#ifdef HAVE_DROP_PRIVILEGES
argv[arg++] = "-o";
argv[arg++] = "relaxed_privileges";
#endif
argv[arg++] = NULL;
assert(execv(argv[0], argv) != -1);
}
/* Yeah just let us "busy-wait" for the file to be created ;-) */
while (access(filename, F_OK) == -1) {
usleep(10);
}
FILE *fp = fopen(filename, "r");
if (fp == NULL) {
fprintf(stderr, "Failed to open the file containing port numbers: %s\n",
strerror(errno));
assert(false);
}
*port_out = (in_port_t)-1;
char buffer[80];
while ((fgets(buffer, sizeof(buffer), fp)) != NULL) {
if (strncmp(buffer, "TCP INET: ", 10) == 0) {
int32_t val;
assert(safe_strtol(buffer + 10, &val));
*port_out = (in_port_t)val;
}
}
fclose(fp);
assert(remove(filename) == 0);
if (daemon) {
/* loop and wait for the pid file.. There is a potential race
* condition that the server just created the file but isn't
* finished writing the content, so we loop a few times
* reading as well */
while (access(pid_file, F_OK) == -1) {
usleep(10);
}
fp = fopen(pid_file, "r");
if (fp == NULL) {
fprintf(stderr, "Failed to open pid file: %s\n",
strerror(errno));
assert(false);
}
/* Avoid race by retrying 20 times */
for (int x = 0; x < 20 && fgets(buffer, sizeof(buffer), fp) == NULL; x++) {
usleep(10);
}
fclose(fp);
int32_t val;
assert(safe_strtol(buffer, &val));
pid = (pid_t)val;
}
return pid;
}
static enum test_return test_issue_44(void) {
in_port_t port;
pid_t pid = start_server(&port, true, 15);
assert(kill(pid, SIGHUP) == 0);
sleep(1);
assert(kill(pid, SIGTERM) == 0);
return TEST_PASS;
}
static struct addrinfo *lookuphost(const char *hostname, in_port_t port)
{
struct addrinfo *ai = 0;
struct addrinfo hints = { .ai_family = AF_UNSPEC,
.ai_protocol = IPPROTO_TCP,
.ai_socktype = SOCK_STREAM };
char service[NI_MAXSERV];
int error;
(void)snprintf(service, NI_MAXSERV, "%d", port);
if ((error = getaddrinfo(hostname, service, &hints, &ai)) != 0) {
if (error != EAI_SYSTEM) {
fprintf(stderr, "getaddrinfo(): %s\n", gai_strerror(error));
} else {
perror("getaddrinfo()");
}
}
return ai;
}
static int connect_server(const char *hostname, in_port_t port, bool nonblock)
{
struct addrinfo *ai = lookuphost(hostname, port);
int sock = -1;
if (ai != NULL) {
if ((sock = socket(ai->ai_family, ai->ai_socktype,
ai->ai_protocol)) != -1) {
if (connect(sock, ai->ai_addr, ai->ai_addrlen) == -1) {
fprintf(stderr, "Failed to connect socket: %s\n",
strerror(errno));
close(sock);
sock = -1;
} else if (nonblock) {
int flags = fcntl(sock, F_GETFL, 0);
if (flags < 0 || fcntl(sock, F_SETFL, flags | O_NONBLOCK) < 0) {
fprintf(stderr, "Failed to enable nonblocking mode: %s\n",
strerror(errno));
close(sock);
sock = -1;
}
}
} else {
fprintf(stderr, "Failed to create socket: %s\n", strerror(errno));
}
freeaddrinfo(ai);
}
return sock;
}
static enum test_return test_vperror(void) {
int rv = 0;
int oldstderr = dup(STDERR_FILENO);
char tmpl[sizeof(TMP_TEMPLATE)+1];
strncpy(tmpl, TMP_TEMPLATE, sizeof(TMP_TEMPLATE)+1);
int newfile = mkstemp(tmpl);
assert(newfile > 0);
rv = dup2(newfile, STDERR_FILENO);
assert(rv == STDERR_FILENO);
rv = close(newfile);
assert(rv == 0);
errno = EIO;
vperror("Old McDonald had a farm. %s", "EI EIO");
/* Restore stderr */
rv = dup2(oldstderr, STDERR_FILENO);
assert(rv == STDERR_FILENO);
/* Go read the file */
char buf[80] = { 0 };
FILE *efile = fopen(tmpl, "r");
assert(efile);
char *prv = fgets(buf, sizeof(buf), efile);
assert(prv);
fclose(efile);
unlink(tmpl);
char expected[80] = { 0 };
snprintf(expected, sizeof(expected),
"Old McDonald had a farm. EI EIO: %s\n", strerror(EIO));
/*
fprintf(stderr,
"\nExpected: ``%s''"
"\nGot: ``%s''\n", expected, buf);
*/
return strcmp(expected, buf) == 0 ? TEST_PASS : TEST_FAIL;
}
static void send_ascii_command(const char *buf) {
off_t offset = 0;
const char* ptr = buf;
size_t len = strlen(buf);
do {
ssize_t nw = write(sock, ptr + offset, len - offset);
if (nw == -1) {
if (errno != EINTR) {
fprintf(stderr, "Failed to write: %s\n", strerror(errno));
abort();
}
} else {
offset += nw;
}
} while (offset < len);
}
/*
* This is a dead slow single byte read, but it should only read out
* _one_ response and I don't have an input buffer... The current
* implementation only supports single-line responses, so if you want to use
* it for get commands you need to implement that first ;-)
*/
static void read_ascii_response(char *buffer, size_t size) {
off_t offset = 0;
bool need_more = true;
do {
ssize_t nr = read(sock, buffer + offset, 1);
if (nr == -1) {
if (errno != EINTR) {
fprintf(stderr, "Failed to read: %s\n", strerror(errno));
abort();
}
} else {
assert(nr == 1);
if (buffer[offset] == '\n') {
need_more = false;
buffer[offset + 1] = '\0';
}
offset += nr;
assert(offset + 1 < size);
}
} while (need_more);
}
static enum test_return test_issue_92(void) {
char buffer[1024];
close(sock);
sock = connect_server("127.0.0.1", port, false);
send_ascii_command("stats cachedump 1 0 0\r\n");
read_ascii_response(buffer, sizeof(buffer));
assert(strncmp(buffer, "END", strlen("END")) == 0);
send_ascii_command("stats cachedump 200 0 0\r\n");
read_ascii_response(buffer, sizeof(buffer));
assert(strncmp(buffer, "CLIENT_ERROR", strlen("CLIENT_ERROR")) == 0);
close(sock);
sock = connect_server("127.0.0.1", port, false);
return TEST_PASS;
}
static enum test_return test_issue_102(void) {
char buffer[4096];
memset(buffer, ' ', sizeof(buffer));
buffer[sizeof(buffer) - 1] = '\0';
close(sock);
sock = connect_server("127.0.0.1", port, false);
send_ascii_command(buffer);
/* verify that the server closed the connection */
assert(read(sock, buffer, sizeof(buffer)) == 0);
close(sock);
sock = connect_server("127.0.0.1", port, false);
snprintf(buffer, sizeof(buffer), "gets ");
size_t offset = 5;
while (offset < 4000) {
offset += snprintf(buffer + offset, sizeof(buffer) - offset,
"%010u ", (unsigned int)offset);
}
send_ascii_command(buffer);
usleep(250);
send_ascii_command("\r\n");
char rsp[80];
read_ascii_response(rsp, sizeof(rsp));
assert(strncmp(rsp, "END", strlen("END")) == 0);
buffer[3]= ' ';
send_ascii_command(buffer);
usleep(250);
send_ascii_command("\r\n");
read_ascii_response(rsp, sizeof(rsp));
assert(strncmp(rsp, "END", strlen("END")) == 0);
memset(buffer, ' ', sizeof(buffer));
int len = snprintf(buffer + 101, sizeof(buffer) - 101, "gets foo");
buffer[101 + len] = ' ';
buffer[sizeof(buffer) - 1] = '\0';
send_ascii_command(buffer);
/* verify that the server closed the connection */
assert(read(sock, buffer, sizeof(buffer)) == 0);
close(sock);
sock = connect_server("127.0.0.1", port, false);
return TEST_PASS;
}
static enum test_return start_memcached_server(void) {
server_pid = start_server(&port, false, 600);
sock = connect_server("127.0.0.1", port, false);
return TEST_PASS;
}
static enum test_return stop_memcached_server(void) {
close(sock);
if (server_pid != -1) {
assert(kill(server_pid, SIGTERM) == 0);
}
return TEST_PASS;
}
static enum test_return shutdown_memcached_server(void) {
char buffer[1024];
close(sock);
sock = connect_server("127.0.0.1", port, false);
send_ascii_command("shutdown\r\n");
/* verify that the server closed the connection */
assert(read(sock, buffer, sizeof(buffer)) == 0);
close(sock);
/* We set server_pid to -1 so that we don't later call kill() */
if (kill(server_pid, 0) == 0) {
server_pid = -1;
}
return TEST_PASS;
}
static void safe_send(const void* buf, size_t len, bool hickup)
{
off_t offset = 0;
const char* ptr = buf;
#ifdef MESSAGE_DEBUG
uint8_t val = *ptr;
assert(val == (uint8_t)0x80);
fprintf(stderr, "About to send %lu bytes:", (unsigned long)len);
for (int ii = 0; ii < len; ++ii) {
if (ii % 4 == 0) {
fprintf(stderr, "\n ");
}
val = *(ptr + ii);
fprintf(stderr, " 0x%02x", val);
}
fprintf(stderr, "\n");
usleep(500);
#endif
do {
size_t num_bytes = len - offset;
if (hickup) {
if (num_bytes > 1024) {
num_bytes = (rand() % 1023) + 1;
}
}
ssize_t nw = write(sock, ptr + offset, num_bytes);
if (nw == -1) {
if (errno != EINTR) {
fprintf(stderr, "Failed to write: %s\n", strerror(errno));
abort();
}
} else {
if (hickup) {
usleep(100);
}
offset += nw;
}
} while (offset < len);
}
static bool safe_recv(void *buf, size_t len) {
if (len == 0) {
return true;
}
off_t offset = 0;
do {
ssize_t nr = read(sock, ((char*)buf) + offset, len - offset);
if (nr == -1) {
if (errno != EINTR) {
fprintf(stderr, "Failed to read: %s\n", strerror(errno));
abort();
}
} else {
if (nr == 0 && allow_closed_read) {
return false;
}
assert(nr != 0);
offset += nr;
}
} while (offset < len);
return true;
}
static bool safe_recv_packet(void *buf, size_t size) {
protocol_binary_response_no_extras *response = buf;
assert(size > sizeof(*response));
if (!safe_recv(response, sizeof(*response))) {
return false;
}
response->message.header.response.keylen = ntohs(response->message.header.response.keylen);
response->message.header.response.status = ntohs(response->message.header.response.status);
response->message.header.response.bodylen = ntohl(response->message.header.response.bodylen);
size_t len = sizeof(*response);
char *ptr = buf;
ptr += len;
if (!safe_recv(ptr, response->message.header.response.bodylen)) {
return false;
}
#ifdef MESSAGE_DEBUG
usleep(500);
ptr = buf;
len += response->message.header.response.bodylen;
uint8_t val = *ptr;
assert(val == (uint8_t)0x81);
fprintf(stderr, "Received %lu bytes:", (unsigned long)len);
for (int ii = 0; ii < len; ++ii) {
if (ii % 4 == 0) {
fprintf(stderr, "\n ");
}
val = *(ptr + ii);
fprintf(stderr, " 0x%02x", val);
}
fprintf(stderr, "\n");
#endif
return true;
}
static off_t storage_command(char*buf,
size_t bufsz,
uint8_t cmd,
const void* key,
size_t keylen,
const void* dta,
size_t dtalen,
uint32_t flags,
uint32_t exp) {
/* all of the storage commands use the same command layout */
protocol_binary_request_set *request = (void*)buf;
assert(bufsz > sizeof(*request) + keylen + dtalen);
memset(request, 0, sizeof(*request));
request->message.header.request.magic = PROTOCOL_BINARY_REQ;
request->message.header.request.opcode = cmd;
request->message.header.request.keylen = htons(keylen);
request->message.header.request.extlen = 8;
request->message.header.request.bodylen = htonl(keylen + 8 + dtalen);
request->message.header.request.opaque = 0xdeadbeef;
request->message.body.flags = flags;
request->message.body.expiration = exp;
off_t key_offset = sizeof(protocol_binary_request_no_extras) + 8;
memcpy(buf + key_offset, key, keylen);
if (dta != NULL) {
memcpy(buf + key_offset + keylen, dta, dtalen);
}
return key_offset + keylen + dtalen;
}
static off_t ext_command(char* buf,
size_t bufsz,
uint8_t cmd,
const void* ext,
size_t extlen,
const void* key,
size_t keylen,
const void* dta,
size_t dtalen) {
protocol_binary_request_no_extras *request = (void*)buf;
assert(bufsz > sizeof(*request) + extlen + keylen + dtalen);
memset(request, 0, sizeof(*request));
request->message.header.request.magic = PROTOCOL_BINARY_REQ;
request->message.header.request.opcode = cmd;
request->message.header.request.extlen = extlen;
request->message.header.request.keylen = htons(keylen);
request->message.header.request.bodylen = htonl(extlen + keylen + dtalen);
request->message.header.request.opaque = 0xdeadbeef;
off_t ext_offset = sizeof(protocol_binary_request_no_extras);
off_t key_offset = ext_offset + extlen;
off_t dta_offset = key_offset + keylen;
if (ext != NULL) {
memcpy(buf + ext_offset, ext, extlen);
}
if (key != NULL) {
memcpy(buf + key_offset, key, keylen);
}
if (dta != NULL) {
memcpy(buf + dta_offset, dta, dtalen);
}
return sizeof(*request) + extlen + keylen + dtalen;
}
static off_t raw_command(char* buf,
size_t bufsz,
uint8_t cmd,
const void* key,
size_t keylen,
const void* dta,
size_t dtalen) {
/* all of the storage commands use the same command layout */
return ext_command(buf, bufsz, cmd, NULL, 0, key, keylen, dta, dtalen);
}
static off_t flush_command(char* buf, size_t bufsz, uint8_t cmd, uint32_t exptime, bool use_extra) {
protocol_binary_request_flush *request = (void*)buf;
assert(bufsz > sizeof(*request));
memset(request, 0, sizeof(*request));
request->message.header.request.magic = PROTOCOL_BINARY_REQ;
request->message.header.request.opcode = cmd;
off_t size = sizeof(protocol_binary_request_no_extras);
if (use_extra) {
request->message.header.request.extlen = 4;
request->message.body.expiration = htonl(exptime);
request->message.header.request.bodylen = htonl(4);
size += 4;
}
request->message.header.request.opaque = 0xdeadbeef;
return size;
}
static off_t touch_command(char* buf,
size_t bufsz,
uint8_t cmd,
const void* key,
size_t keylen,
uint32_t exptime) {
protocol_binary_request_touch *request = (void*)buf;
assert(bufsz > sizeof(*request));
memset(request, 0, sizeof(*request));
request->message.header.request.magic = PROTOCOL_BINARY_REQ;
request->message.header.request.opcode = cmd;
request->message.header.request.keylen = htons(keylen);
request->message.header.request.extlen = 4;
request->message.body.expiration = htonl(exptime);
request->message.header.request.bodylen = htonl(keylen + 4);
request->message.header.request.opaque = 0xdeadbeef;
off_t key_offset = sizeof(protocol_binary_request_no_extras) + 4;
memcpy(buf + key_offset, key, keylen);
return sizeof(protocol_binary_request_no_extras) + 4 + keylen;
}
static off_t arithmetic_command(char* buf,
size_t bufsz,
uint8_t cmd,
const void* key,
size_t keylen,
uint64_t delta,
uint64_t initial,
uint32_t exp) {
protocol_binary_request_incr *request = (void*)buf;
assert(bufsz > sizeof(*request) + keylen);
memset(request, 0, sizeof(*request));
request->message.header.request.magic = PROTOCOL_BINARY_REQ;
request->message.header.request.opcode = cmd;
request->message.header.request.keylen = htons(keylen);
request->message.header.request.extlen = 20;
request->message.header.request.bodylen = htonl(keylen + 20);
request->message.header.request.opaque = 0xdeadbeef;
request->message.body.delta = htonll(delta);
request->message.body.initial = htonll(initial);
request->message.body.expiration = htonl(exp);
off_t key_offset = sizeof(protocol_binary_request_no_extras) + 20;
memcpy(buf + key_offset, key, keylen);
return key_offset + keylen;
}
static void validate_response_header(protocol_binary_response_no_extras *response,
uint8_t cmd, uint16_t status)
{
assert(response->message.header.response.magic == PROTOCOL_BINARY_RES);
assert(response->message.header.response.opcode == cmd);
assert(response->message.header.response.datatype == PROTOCOL_BINARY_RAW_BYTES);
assert(response->message.header.response.status == status);
assert(response->message.header.response.opaque == 0xdeadbeef);
if (status == PROTOCOL_BINARY_RESPONSE_SUCCESS) {
switch (cmd) {
case PROTOCOL_BINARY_CMD_ADDQ:
case PROTOCOL_BINARY_CMD_APPENDQ:
case PROTOCOL_BINARY_CMD_DECREMENTQ:
case PROTOCOL_BINARY_CMD_DELETEQ:
case PROTOCOL_BINARY_CMD_FLUSHQ:
case PROTOCOL_BINARY_CMD_INCREMENTQ:
case PROTOCOL_BINARY_CMD_PREPENDQ:
case PROTOCOL_BINARY_CMD_QUITQ:
case PROTOCOL_BINARY_CMD_REPLACEQ:
case PROTOCOL_BINARY_CMD_SETQ:
assert("Quiet command shouldn't return on success" == NULL);
default:
break;
}
switch (cmd) {
case PROTOCOL_BINARY_CMD_ADD:
case PROTOCOL_BINARY_CMD_REPLACE:
case PROTOCOL_BINARY_CMD_SET:
case PROTOCOL_BINARY_CMD_APPEND:
case PROTOCOL_BINARY_CMD_PREPEND:
assert(response->message.header.response.keylen == 0);
assert(response->message.header.response.extlen == 0);
assert(response->message.header.response.bodylen == 0);
assert(response->message.header.response.cas != 0);
break;
case PROTOCOL_BINARY_CMD_FLUSH:
case PROTOCOL_BINARY_CMD_NOOP:
case PROTOCOL_BINARY_CMD_QUIT:
case PROTOCOL_BINARY_CMD_DELETE:
assert(response->message.header.response.keylen == 0);
assert(response->message.header.response.extlen == 0);
assert(response->message.header.response.bodylen == 0);
assert(response->message.header.response.cas == 0);
break;
case PROTOCOL_BINARY_CMD_DECREMENT:
case PROTOCOL_BINARY_CMD_INCREMENT:
assert(response->message.header.response.keylen == 0);
assert(response->message.header.response.extlen == 0);
assert(response->message.header.response.bodylen == 8);
assert(response->message.header.response.cas != 0);
break;
case PROTOCOL_BINARY_CMD_STAT:
assert(response->message.header.response.extlen == 0);
/* key and value exists in all packets except in the terminating */
assert(response->message.header.response.cas == 0);
break;
case PROTOCOL_BINARY_CMD_VERSION:
assert(response->message.header.response.keylen == 0);
assert(response->message.header.response.extlen == 0);
assert(response->message.header.response.bodylen != 0);
assert(response->message.header.response.cas == 0);
break;
case PROTOCOL_BINARY_CMD_GET: