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reorganizing http functions

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hyung-hwan
2011-07-06 09:45:00 +00:00
parent 6fcd875403
commit 4d55ebbcce
26 changed files with 947 additions and 651 deletions
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14
qse/samples/http/Makefile.am
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bin_PROGRAMS = http01
LDFLAGS = -L../../lib/cmn -L../../lib/http
LDADD = -lqsehttp -lqsecmn $(LIBM) -lpthread
http01_SOURCES = http01.c

540
qse/samples/http/Makefile.in
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916
qse/samples/http/http01.c
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#include <qse/http/http.h>
#include <qse/cmn/mem.h>
#include <qse/cmn/str.h>
#include <qse/cmn/stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <signal.h>
#include <pthread.h>
#include <sys/time.h>
#include <sys/sendfile.h>
#include <sys/stat.h>
#define MAX_SENDFILE_SIZE 4096
//#define MAX_SENDFILE_SIZE 64
typedef struct client_t client_t;
typedef struct client_array_t client_array_t;
typedef struct client_action_t client_action_t;
struct client_action_t
{
enum
{
ACTION_SENDTEXT,
ACTION_SENDTEXTDUP,
ACTION_SENDFILE,
ACTION_DISCONNECT
} type;
union
{
struct
{
const qse_htoc_t* ptr;
qse_size_t left;
} sendtext;
struct
{
qse_htoc_t* ptr;
qse_size_t left;
} sendtextdup;
struct
{
int fd;
off_t left;
off_t offset;
} sendfile;
} u;
};
struct client_t
{
int fd;
struct sockaddr_storage addr;
qse_http_t* http;
pthread_mutex_t action_mutex;
struct
{
int offset;
int count;
client_action_t target[32];
} action;
};
struct client_array_t
{
int capa;
int size;
client_t* data;
pthread_cond_t cond;
};
typedef struct appdata_t appdata_t;
struct appdata_t
{
client_array_t ca;
pthread_mutex_t camutex;
pthread_cond_t cacond;
};
typedef struct http_xtn_t http_xtn_t;
struct http_xtn_t
{
client_array_t* array;
qse_size_t index;
};
static int enqueue_client_action_unlocked (client_t* client, const client_action_t* action)
{
int index;
if (client->action.count >= QSE_COUNTOF(client->action.target)) return -1;
index = (client->action.offset + client->action.count) %
QSE_COUNTOF(client->action.target);
client->action.target[index] = *action;
client->action.count++;
return 0;
}
static int enqueue_client_action_locked (client_t* client, const client_action_t* action)
{
int ret;
pthread_mutex_lock (&client->action_mutex);
ret = enqueue_client_action_unlocked (client, action);
pthread_mutex_unlock (&client->action_mutex);
return ret;
}
static int dequeue_client_action_unlocked (client_t* client, client_action_t* action)
{
client_action_t* actp;
if (client->action.count <= 0) return -1;
actp = &client->action.target[client->action.offset];
if (actp->type == ACTION_SENDFILE) close (actp->u.sendfile.fd);
else if (actp->type == ACTION_SENDTEXTDUP) free (actp->u.sendtextdup.ptr);
if (action) *action = *actp;
client->action.offset = (client->action.offset + 1) % QSE_COUNTOF(client->action.target);
client->action.count--;
return 0;
}
static int dequeue_client_action_locked (client_t* client, client_action_t* action)
{
int ret;
pthread_mutex_lock (&client->action_mutex);
ret = dequeue_client_action_unlocked (client, action);
pthread_mutex_unlock (&client->action_mutex);
return ret;
}
static void purge_client_actions_locked (client_t* client)
{
client_action_t action;
pthread_mutex_lock (&client->action_mutex);
while (dequeue_client_action_unlocked (client, &action) == 0);
pthread_mutex_unlock (&client->action_mutex);
}
static int enqueue_sendtext_locked (client_t* client, const char* text)
{
client_action_t action;
memset (&action, 0, sizeof(action));
action.type = ACTION_SENDTEXT;
action.u.sendtext.ptr = text;
action.u.sendtext.left = strlen(text);
return enqueue_client_action_locked (client, &action);
}
static int enqueue_sendfmt_locked (client_t* client, const char* fmt, ...)
{
return 0;
}
static int enqueue_sendtextdup_locked (client_t* client, const char* text)
{
client_action_t action;
char* textdup;
textdup = strdup (text);
if (textdup == NULL) return -1;
memset (&action, 0, sizeof(action));
action.type = ACTION_SENDTEXTDUP;
action.u.sendtextdup.ptr = textdup;
action.u.sendtextdup.left = strlen(textdup);
if (enqueue_client_action_locked (client, &action) <= -1)
{
free (textdup);
return -1;
}
return 0;
}
static int enqueue_sendfile_locked (client_t* client, int fd)
{
client_action_t action;
struct stat st;
if (fstat (fd, &st) <= -1) return -1;
memset (&action, 0, sizeof(action));
action.type = ACTION_SENDFILE;
action.u.sendfile.fd = fd;
action.u.sendfile.left = st.st_size;;
return enqueue_client_action_locked (client, &action);
}
static int enqueue_disconnect (client_t* client)
{
client_action_t action;
memset (&action, 0, sizeof(action));
action.type = ACTION_DISCONNECT;
return enqueue_client_action_locked (client, &action);
}
static qse_htb_walk_t walk (qse_htb_t* htb, qse_htb_pair_t* pair, void* ctx)
{
qse_printf (QSE_T("HEADER OK %d[%S] %d[%S]\n"), (int)QSE_HTB_KLEN(pair), QSE_HTB_KPTR(pair), (int)QSE_HTB_VLEN(pair), QSE_HTB_VPTR(pair));
return QSE_HTB_WALK_FORWARD;
}
static int handle_request (qse_http_t* http, qse_htre_t* req)
{
http_xtn_t* xtn = (http_xtn_t*) qse_http_getxtn (http);
client_t* client = &xtn->array->data[xtn->index];
qse_printf (QSE_T("================================\n"));
qse_printf (QSE_T("REQUEST ==> [%S] version[%d.%d] method[%d]\n"),
req->re.quest.path.ptr, req->version.major, req->version.minor, req->re.quest.method);
if (req->attr.host.ptr) qse_printf (QSE_T("HOST===> %S\n"), req->attr.host.ptr);
qse_htb_walk (&http->re.hdrtab, walk, QSE_NULL);
if (QSE_MBS_LEN(&http->re.content) > 0)
{
qse_printf (QSE_T("content = [%.*S]\n"),
(int)QSE_MBS_LEN(&http->re.content),
QSE_MBS_PTR(&http->re.content));
}
if (req->re.quest.method == QSE_HTTP_REQ_GET || req->re.quest.method == QSE_HTTP_REQ_POST)
{
qse_htre_decodereqpath (req, );
/* original path not available anymore */
int fd = open (req->re.quest.path.ptr, O_RDONLY);
if (fd <= -1)
{
char text[256];
const char* msg = "<html><head><title>NOT FOUND</title></head><body><b>REQUESTD FILE NOT FOUND</b></body></html>";
snprintf (text, sizeof(text),
"HTTP/%d.%d 404 Not found\r\nContent-Length: %d\r\n\r\n%s\r\n\r\n",
req->version.major,
req->version.minor,
(int)strlen(msg) + 4, msg);
qse_printf (QSE_T("open failure.... sending 404 not found\n"));
if (enqueue_sendtextdup_locked (client, text) <= -1)
{
qse_printf (QSE_T("failed to push action....\n"));
return -1;
}
}
else
{
struct stat st;
if (fstat (fd, &st) <= -1)
{
close (fd);
qse_printf (QSE_T("fstat failure....\n"));
}
else if (st.st_size <= 0)
{
close (fd);
qse_printf (QSE_T("empty file....\n"));
#if 0
qse_htre_t* res = qse_http_newresponse (http);
if (req == QSE_NULL)
{
/* hard failure... can't answer */
/* arrange to close connection */
}
ptr = qse_http_emitresponse (http, res, &len);
if (ptr == QSE_NULL)
{
/* hard failure... can't answer */
/* arrange to close connection */
}
action.type = ACTION_SENDTEXT;
action.u.sendtext.ptr = ptr;
action.u.sendtext.len = len;
#endif
}
else
{
char text[128];
snprintf (text, sizeof(text),
"HTTP/%d.%d 200 OK\r\nContent-Length: %llu\r\n\r\n",
req->version.major,
req->version.minor, (unsigned long long)st.st_size);
#if 0
if (enqueue_sendfmt_locked (client,
"HTTP/%d.%d 200 OK\r\nContent-Length: %llu\r\n\r\n",
req->version.major,
req->version.minor,
(unsigned long long)st.st_size) <= -1)
{
}
#endif
if (enqueue_sendtextdup_locked (client, text) <= -1)
{
qse_printf (QSE_T("failed to push action....\n"));
return -1;
}
if (enqueue_sendfile_locked (client, fd) <= -1)
{
/* TODO: close??? just close....??? */
qse_printf (QSE_T("failed to push action....\n"));
return -1;
}
if (req->attr.connection_close)
{
if (enqueue_disconnect (client) <= -1)
{
qse_printf (QSE_T("failed to push action....\n"));
return -1;
}
}
}
}
}
else
{
char text[256];
const char* msg = "<html><head><title>Method not allowed</title></head><body><b>METHOD NOT ALLOWED</b></body></html>";
snprintf (text, sizeof(text),
"HTTP/%d.%d 405 Method not allowed\r\nContent-Length: %d\r\n\r\n%s\r\n\r\n",
req->version.major,
req->version.minor, (int)strlen(msg)+4, msg);
if (enqueue_sendtextdup_locked (client, text) <= -1)
{
qse_printf (QSE_T("failed to push action....\n"));
return -1;
}
}
pthread_cond_signal (&xtn->array->cond);
return 0;
}
static int handle_expect_continue (qse_http_t* http, qse_htre_t* req)
{
http_xtn_t* xtn = (http_xtn_t*) qse_http_getxtn (http);
client_t* client = &xtn->array->data[xtn->index];
if (req->re.quest.method == QSE_HTTP_REQ_GET)
{
char text[32];
qse_htre_setdiscard (req, 1);
snprintf (text, sizeof(text),
"HTTP/%d.%d 404 Not found\r\n\r\n",
req->version.major, req->version.minor);
if (enqueue_sendtextdup_locked (client, text) <= -1)
{
return -1;
}
}
else
{
char text[32];
snprintf (text, sizeof(text),
"HTTP/%d.%d 100 OK\r\n\r\n",
req->version.major, req->version.minor);
if (enqueue_sendtextdup_locked (client, text) <= -1)
{
return -1;
}
}
return 0;
}
static int handle_response (qse_http_t* http, qse_htre_t* res)
{
#if 0
if (res->code >= 100 && res->code <= 199)
{
/* informational response */
}
#endif
qse_printf (QSE_T("response received... HTTP/%d.%d %d %.*S\n"),
res->version.major, res->version.minor, res->re.sponse.code,
(int)res->re.sponse.message.len, res->re.sponse.message.ptr);
return -1;
}
qse_http_recbs_t http_recbs =
{
handle_request,
handle_response,
handle_expect_continue
};
int mkserver (const char* portstr)
{
int s, flag, port = atoi(portstr);
struct sockaddr_in6 addr;
s = socket (PF_INET6, SOCK_STREAM, IPPROTO_TCP);
if (s <= -1) return -1;
flag = 1;
setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &flag, sizeof(flag));
memset (&addr, 0, sizeof(addr));
addr.sin6_family = AF_INET6;
addr.sin6_port = htons(port);
//inet_pton (AF_INET6, "::1", &addr.sin6_addr);
if (bind (s, (struct sockaddr*)&addr, sizeof(addr)) <= -1)
{
close (s);
return -1;
}
if (listen (s, 10) <= -1)
{
close (s);
return -1;
}
flag = fcntl (s, F_GETFL);
if (flag >= 0) fcntl (s, F_SETFL, flag | O_NONBLOCK);
return s;
}
static void init_client_array (client_array_t* array)
{
array->capa = 0;
array->size = 0;
array->data = QSE_NULL;
pthread_cond_init (&array->cond, NULL);
}
static void delete_from_client_array (client_array_t* array, int fd)
{
if (array->data[fd].http)
{
purge_client_actions_locked (&array->data[fd]);
pthread_mutex_destroy (&array->data[fd].action_mutex);
qse_http_close (array->data[fd].http);
array->data[fd].http = QSE_NULL;
close (array->data[fd].fd);
array->size--;
}
}
static void fini_client_array (client_array_t* array)
{
if (array->data)
{
int fd;
for (fd = 0; fd < array->capa; fd++)
delete_from_client_array (array, fd);
free (array->data);
array->capa = 0;
array->size = 0;
array->data = QSE_NULL;
}
pthread_cond_destroy (&array->cond);
}
static client_t* insert_into_client_array (
client_array_t* array, int fd, struct sockaddr_storage* addr)
{
http_xtn_t* xtn;
if (fd >= array->capa)
{
#define ALIGN 512
client_t* tmp;
qse_size_t capa = ((fd + ALIGN) / ALIGN) * ALIGN;
tmp = realloc (array->data, capa * QSE_SIZEOF(client_t));
if (tmp == QSE_NULL) return QSE_NULL;
memset (&tmp[array->capa], 0,
QSE_SIZEOF(client_t) * (capa - array->capa));
array->data = tmp;
array->capa = capa;
}
QSE_ASSERT (array->data[fd].http == QSE_NULL);
array->data[fd].fd = fd;
array->data[fd].addr = *addr;
array->data[fd].http = qse_http_open (QSE_MMGR_GETDFL(), QSE_SIZEOF(*xtn));
if (array->data[fd].http == QSE_NULL) return QSE_NULL;
pthread_mutex_init (&array->data[fd].action_mutex, NULL);
xtn = (http_xtn_t*)qse_http_getxtn (array->data[fd].http);
xtn->array = array;
xtn->index = fd;
qse_http_setrecbs (array->data[fd].http, &http_recbs);
array->size++;
return &array->data[fd];
}
static int make_fd_set_from_client_array (
client_array_t* ca, int s, fd_set* r, fd_set* w)
{
int fd, max = s;
if (r)
{
FD_ZERO (r);
FD_SET (s, r);
}
if (w)
{
FD_ZERO (w);
}
for (fd = 0; fd < ca->capa; fd++)
{
if (ca->data[fd].http)
{
if (r)
{
FD_SET (ca->data[fd].fd, r);
if (ca->data[fd].fd > max) max = ca->data[fd].fd;
}
if (w && ca->data[fd].action.count > 0)
{
/* add it to the set if it has a response to send */
FD_SET (ca->data[fd].fd, w);
if (ca->data[fd].fd > max) max = ca->data[fd].fd;
}
}
}
return max;
}
static int quit = 0;
static void sigint (int sig)
{
quit = 1;
}
static int take_client_action (client_t* client)
{
client_action_t* action;
action = &client->action.target[client->action.offset];
switch (action->type)
{
case ACTION_SENDTEXT:
{
ssize_t n;
size_t count;
count = MAX_SENDFILE_SIZE;
if (count >= action->u.sendtext.left)
count = action->u.sendtext.left;
n = send (client->fd, action->u.sendtext.ptr, count, 0);
if (n <= -1)
{
qse_printf (QSE_T("send text failure... arrange to close this connection....\n"));
dequeue_client_action_locked (client, NULL);
shutdown (client->fd, SHUT_RDWR);
}
else
{
/* TODO: what if n is 0???? does it mean EOF? */
action->u.sendtext.left -= n;
if (action->u.sendtext.left <= 0)
{
qse_printf (QSE_T("finished sending text ...\n"));
dequeue_client_action_locked (client, NULL);
}
}
break;
}
case ACTION_SENDTEXTDUP:
{
ssize_t n;
size_t count;
count = MAX_SENDFILE_SIZE;
if (count >= action->u.sendtextdup.left)
count = action->u.sendtextdup.left;
n = send (client->fd, action->u.sendtextdup.ptr, count, 0);
if (n <= -1)
{
qse_printf (QSE_T("send text dup failure... arrange to close this connection....\n"));
dequeue_client_action_locked (client, NULL);
shutdown (client->fd, SHUT_RDWR);
}
else
{
/* TODO: what if n is 0???? does it mean EOF? */
action->u.sendtextdup.left -= n;
if (action->u.sendtextdup.left <= 0)
{
qse_printf (QSE_T("finished sending text dup...\n"));
dequeue_client_action_locked (client, NULL);
}
}
break;
}
case ACTION_SENDFILE:
{
ssize_t n;
size_t count;
count = MAX_SENDFILE_SIZE;
if (count >= action->u.sendfile.left)
count = action->u.sendfile.left;
n = sendfile (
client->fd,
action->u.sendfile.fd,
&action->u.sendfile.offset,
count
);
if (n <= -1)
{
qse_printf (QSE_T("sendfile failure... arrange to close this connection....\n"));
dequeue_client_action_locked (client, NULL);
shutdown (client->fd, SHUT_RDWR);
}
else
{
/* TODO: what if n is 0???? does it mean EOF? */
action->u.sendfile.left -= n;
if (action->u.sendfile.left <= 0)
{
qse_printf (QSE_T("finished sending...\n"));
dequeue_client_action_locked (client, NULL);
}
}
break;
}
case ACTION_DISCONNECT:
{
shutdown (client->fd, SHUT_RDWR);
break;
}
}
return 0;
}
static void* response_thread (void* arg)
{
appdata_t* appdata = (appdata_t*)arg;
while (!quit)
{
int n, max, fd;
fd_set w;
struct timeval tv;
tv.tv_sec = 1;
tv.tv_usec = 0;
pthread_mutex_lock (&appdata->camutex);
max = make_fd_set_from_client_array (&appdata->ca, -1, NULL, &w);
pthread_mutex_unlock (&appdata->camutex);
while (max == -1 && !quit)
{
struct timeval now;
struct timespec timeout;
pthread_mutex_lock (&appdata->camutex);
gettimeofday (&now, NULL);
timeout.tv_sec = now.tv_sec + 2;
timeout.tv_nsec = now.tv_usec * 1000;
pthread_cond_timedwait (&appdata->ca.cond, &appdata->camutex, &timeout);
max = make_fd_set_from_client_array (&appdata->ca, -1, NULL, &w);
pthread_mutex_unlock (&appdata->camutex);
}
if (quit) break;
n = select (max + 1, NULL, &w, NULL, &tv);
if (n <= -1)
{
if (errno == EINTR) continue;
qse_fprintf (QSE_STDERR, QSE_T("Error: select returned failure - %S\n"), strerror(errno));
/* break; */
continue;
}
if (n == 0) continue;
for (fd = 0; fd < appdata->ca.capa; fd++)
{
client_t* client = &appdata->ca.data[fd];
if (!client->http) continue;
if (FD_ISSET(client->fd, &w))
{
if (client->action.count > 0) take_client_action (client);
}
}
}
pthread_exit (NULL);
return NULL;
}
int main (int argc, char* argv[])
{
int s;
pthread_t response_thread_id;
appdata_t appdata;
if (argc != 2)
{
#ifdef QSE_CHAR_IS_MCHAR
qse_fprintf (QSE_STDERR, QSE_T("Usage: %s <port>\n"), argv[0]);
#else
qse_fprintf (QSE_STDERR, QSE_T("Usage: %S <port>\n"), argv[0]);
#endif
return -1;
}
signal (SIGINT, sigint);
signal (SIGPIPE, SIG_IGN);
if ((s = mkserver (argv[1])) <= -1)
{
qse_fprintf (QSE_STDERR, QSE_T("Error: failed to make a server socket\n"));
return -1;
}
/* data receiver main logic */
init_client_array (&appdata.ca);
pthread_mutex_init (&appdata.camutex, NULL);
/* start the response sender as a thread */
pthread_create (&response_thread_id, NULL, response_thread, &appdata);
while (!quit)
{
int n, max, fd;
fd_set r;
struct timeval tv;
tv.tv_sec = 1;
tv.tv_usec = 0;
max = make_fd_set_from_client_array (&appdata.ca, s, &r, NULL);
n = select (max + 1, &r, NULL, NULL, &tv);
if (n <= -1)
{
if (errno == EINTR) continue;
qse_fprintf (QSE_STDERR, QSE_T("Error: select returned failure\n"));
/* break; */
continue;
}
if (n == 0) continue;
if (FD_ISSET(s, &r))
{
int flag, c;
struct sockaddr_storage addr;
socklen_t addrlen = sizeof(addr);
client_t* client;
c = accept (s, (struct sockaddr*)&addr, &addrlen);
if (c <= -1)
{
if (errno != EINTR)
qse_fprintf (QSE_STDERR, QSE_T("Error: accept returned failure\n"));
continue;
}
/* select() uses a fixed-size array so the file descriptor can not
* exceeded FD_SETSIZE */
if (c >= FD_SETSIZE)
{
close (c);
qse_fprintf (QSE_STDERR, QSE_T("Error: socket descriptor too high. probably too many clients\n"));
continue;
}
/* set the nonblock flag in case read() after select() blocks
* for various reasons - data received may be dropped after
* arrival for wrong checksum, for example. */
flag = fcntl (c, F_GETFL);
if (flag >= 0) fcntl (c, F_SETFL, flag | O_NONBLOCK);
pthread_mutex_lock (&appdata.camutex);
client = insert_into_client_array (&appdata.ca, c, &addr);
pthread_mutex_unlock (&appdata.camutex);
if (client == QSE_NULL)
{
close (c);
qse_fprintf (QSE_STDERR, QSE_T("Error: failed to add a client\n"));
continue;
}
qse_printf (QSE_T("connection %d accepted\n"), c);
}
for (fd = 0; fd < appdata.ca.capa; fd++)
{
client_t* client = &appdata.ca.data[fd];
if (!client->http) continue;
if (FD_ISSET(client->fd, &r))
{
/* got input */
qse_htoc_t buf[1024];
ssize_t m;
reread:
m = read (client->fd, buf, sizeof(buf));
if (m <= -1)
{
if (errno != EINTR)
{
pthread_mutex_lock (&appdata.camutex);
delete_from_client_array (&appdata.ca, fd);
pthread_mutex_unlock (&appdata.camutex);
qse_fprintf (QSE_STDERR, QSE_T("Error: failed to read from a client %d\n"), fd);
continue;
}
goto reread;
}
else if (m == 0)
{
pthread_mutex_lock (&appdata.camutex);
delete_from_client_array (&appdata.ca, fd);
pthread_mutex_unlock (&appdata.camutex);
qse_fprintf (QSE_STDERR, QSE_T("Debug: connection closed %d\n"), fd);
continue;
}
/* feed may have called the request callback multiple times...
* that's because we don't know how many valid requests
* are included in 'buf' */
n = qse_http_feed (client->http, buf, m);
if (n <= -1)
{
if (client->http->errnum == QSE_HTTP_EBADRE)
{
/* TODO: write a response to indicate bad request... */
}
pthread_mutex_lock (&appdata.camutex);
delete_from_client_array (&appdata.ca, fd);
pthread_mutex_unlock (&appdata.camutex);
qse_fprintf (QSE_STDERR, QSE_T("Error: http error while processing \n"));
continue;
}
}
}
}
pthread_join (response_thread_id, NULL);
fini_client_array (&appdata.ca);
pthread_mutex_destroy (&appdata.camutex);
close (s);
return 0;
}