static int uwsgi_hook_writefifo(char *arg) {
char *space = strchr(arg, ' ');
if (!space) {
uwsgi_log("invalid hook writefifo syntax, must be: <file> <string>\n");
return -1;
}
*space = 0;
int fd = open(arg, O_WRONLY|O_NONBLOCK);
if (fd < 0) {
uwsgi_error_open(arg);
*space = ' ';
if (errno == ENODEV) return 0;
#ifdef ENXIO
if (errno == ENXIO) return 0;
#endif
return -1;
}
*space = ' ';
size_t l = strlen(space+1);
if (write(fd, space+1, l) != (ssize_t) l) {
uwsgi_error("uwsgi_hook_writefifo()/write()");
close(fd);
return -1;
}
close(fd);
return 0;
}
static int uwsgi_hook_writen(char *arg) {
char *space = strchr(arg, ' ');
if (!space) {
uwsgi_log("invalid hook writen syntax, must be: <file> <string>\n");
return -1;
}
*space = 0;
int fd = open(arg, O_WRONLY|O_CREAT|O_TRUNC, 0666);
if (fd < 0) {
uwsgi_error_open(arg);
*space = ' ';
return -1;
}
*space = ' ';
size_t l = strlen(space+1);
char *buf = uwsgi_malloc(l + 1);
memcpy(buf, space+1, l);
buf[l] = '\n';
if (write(fd, buf, l+1) != (ssize_t) (l+1)) {
uwsgi_error("uwsgi_hook_writen()/write()");
free(buf);
close(fd);
return -1;
}
free(buf);
close(fd);
return 0;
}
int uwsgi_check_pidfile(char *filename) {
struct stat st;
pid_t ret = -1;
int fd = open(filename, O_RDONLY);
if (fd < 0) {
uwsgi_error_open(filename);
goto end;
}
if (fstat(fd, &st)) {
uwsgi_error("fstat()");
goto end2;
}
char *pidstr = uwsgi_calloc(st.st_size + 1);
if (read(fd, pidstr, st.st_size) != st.st_size) {
uwsgi_error("read()");
goto end3;
}
pid_t pid = atoi(pidstr);
if (pid <= 0)
goto end3;
if (!kill(pid, 0)) {
ret = pid;
}
end3:
free(pidstr);
end2:
close(fd);
end:
return ret;
}
static int u_offload_sendfile_prepare(struct wsgi_request *wsgi_req, struct uwsgi_offload_request *uor) {
if (!uor->name && uor->fd == -1) return -1;
if (uor->name) {
uor->fd = open(uor->name, O_RDONLY | O_NONBLOCK);
if (uor->fd < 0) {
uwsgi_error_open(uor->name);
return -1;
}
}
// make a fstat to get the file size
if (!uor->len) {
struct stat st;
if (fstat(uor->fd, &st)) {
uwsgi_error("u_offload_sendfile_prepare()/fstat()");
if (uor->name) {
close(uor->fd);
}
return -1;
}
uor->len = st.st_size;
}
if (uor->fd2 == -1) {
uor->fd2 = uor->s;
}
uor->s = -1;
return 0;
}
static int uwsgi_hook_creat(char *arg) {
int fd = open(arg, O_WRONLY|O_CREAT|O_TRUNC, 0666);
if (fd < 0) {
uwsgi_error_open(arg);
return -1;
}
close(fd);
return 0;
}
void uwsgi_python_hijack(void) {
// the pyshell will be execute only in the first worker
#ifndef UWSGI_PYPY
FILE *pyfile;
if (up.pyrun) {
uwsgi.workers[uwsgi.mywid].hijacked = 1;
UWSGI_GET_GIL;
pyfile = fopen(up.pyrun, "r");
if (!pyfile) {
uwsgi_error_open(up.pyrun);
exit(1);
}
PyRun_SimpleFile(pyfile, up.pyrun);
// could be never executed
exit(0);
}
#endif
if (up.pyshell_oneshot && uwsgi.workers[uwsgi.mywid].hijacked_count > 0) {
uwsgi.workers[uwsgi.mywid].hijacked = 0;
return;
}
if (up.pyshell && uwsgi.mywid == 1) {
uwsgi.workers[uwsgi.mywid].hijacked = 1;
uwsgi.workers[uwsgi.mywid].hijacked_count++;
// re-map stdin to stdout and stderr if we are logging to a file
if (uwsgi.logfile) {
if (dup2(0, 1) < 0) {
uwsgi_error("dup2()");
}
if (dup2(0, 2) < 0) {
uwsgi_error("dup2()");
}
}
UWSGI_GET_GIL;
PyImport_ImportModule("readline");
#ifndef UWSGI_PYPY
int ret = PyRun_InteractiveLoop(stdin, "uwsgi");
if (up.pyshell_oneshot) {
exit(UWSGI_DE_HIJACKED_CODE);
}
if (ret == 0) {
exit(UWSGI_QUIET_CODE);
}
#endif
exit(0);
}
}
int event_queue_add_file_monitor(int eq, char *filename, int *id) {
struct kevent kev;
int fd = open(filename, O_RDONLY);
if (fd < 0) {
uwsgi_error_open(filename);
return -1;
}
EV_SET(&kev, fd, EVFILT_VNODE, EV_ADD|EV_CLEAR, NOTE_WRITE|NOTE_DELETE|NOTE_EXTEND|NOTE_ATTRIB|NOTE_RENAME|NOTE_REVOKE, 0, 0);
if (kevent(eq, &kev, 1, NULL, 0, NULL) < 0) {
uwsgi_error("kevent()");
return -1;
}
*id = fd;
uwsgi_log("added new file to monitor %s\n", filename);
return fd;
}
static int uwsgi_hook_append(char *arg) {
char *space = strchr(arg, ' ');
if (!space) {
uwsgi_log("invalid hook append syntax, must be: <file> <string>\n");
return -1;
}
*space = 0;
int fd = open(arg, O_WRONLY|O_CREAT|O_APPEND, 0666);
if (fd < 0) {
uwsgi_error_open(arg);
*space = ' ';
return -1;
}
*space = ' ';
size_t l = strlen(space+1);
if (write(fd, space+1, l) != (ssize_t) l) {
uwsgi_error("uwsgi_hook_append()/write()");
close(fd);
return -1;
}
close(fd);
return 0;
}
// simply read the whole content of a file
char *uwsgi_simple_file_read(char *filename) {
struct stat sb;
char *buffer;
ssize_t len;
int fd = open(filename, O_RDONLY);
if (fd < 0) {
uwsgi_error_open(filename);
goto end;
}
if (fstat(fd, &sb)) {
uwsgi_error("fstat()");
close(fd);
goto end;
}
buffer = uwsgi_malloc(sb.st_size + 1);
len = read(fd, buffer, sb.st_size);
if (len != sb.st_size) {
uwsgi_error("read()");
free(buffer);
close(fd);
goto end;
}
close(fd);
if (buffer[sb.st_size - 1] == '\n' || buffer[sb.st_size - 1] == '\r') {
buffer[sb.st_size - 1] = 0;
}
buffer[sb.st_size] = 0;
return buffer;
end:
return (char *) "";
}
void uwsgi_stats_pusher_file(struct uwsgi_stats_pusher_instance *uspi, char *json, size_t json_len) {
struct uwsgi_stats_pusher_file_conf *uspic = (struct uwsgi_stats_pusher_file_conf *) uspi->data;
if (!uspi->configured) {
uspic = uwsgi_calloc(sizeof(struct uwsgi_stats_pusher_file_conf));
if (uspi->arg) {
if (uwsgi_kvlist_parse(uspi->arg, strlen(uspi->arg), ',', '=', "path", &uspic->path, "separator", &uspic->separator, "freq", &uspic->freq, NULL)) {
free(uspi);
return;
}
}
if (!uspic->path)
uspic->path = "uwsgi.stats";
if (!uspic->separator)
uspic->separator = "\n\n";
if (uspic->freq)
uspi->freq = atoi(uspic->freq);
uspi->configured = 1;
uspi->data = uspic;
}
int fd = open(uspic->path, O_RDWR | O_CREAT | O_APPEND, S_IRUSR | S_IWUSR | S_IRGRP);
if (fd < 0) {
uwsgi_error_open(uspic->path);
return;
}
ssize_t rlen = write(fd, json, json_len);
if (rlen != (ssize_t) json_len) {
uwsgi_error("uwsgi_stats_pusher_file() -> write()\n");
}
rlen = write(fd, uspic->separator, strlen(uspic->separator));
if (rlen != (ssize_t) strlen(uspic->separator)) {
uwsgi_error("uwsgi_stats_pusher_file() -> write()\n");
}
close(fd);
}
static int uwsgi_hook_appendn(char *arg) {
char *space = strchr(arg, ' ');
if (space)
*space = 0;
int fd = open(arg, O_WRONLY|O_CREAT|O_APPEND, 0666);
if (fd < 0) {
uwsgi_error_open(arg);
if (space)
*space = ' ';
return -1;
}
if (!space) {
// simple newline
if (write(fd, "\n", 1) != 1) {
uwsgi_error("uwsgi_hook_appendn()/write()");
close(fd);
return -1;
}
close(fd);
return 0;
}
*space = ' ';
size_t l = strlen(space+1);
char *buf = uwsgi_malloc(l + 1);
memcpy(buf, space+1, l);
buf[l] = '\n';
if (write(fd, buf, l+1) != (ssize_t) (l+1)) {
uwsgi_error("uwsgi_hook_appendn()/write()");
free(buf);
close(fd);
return -1;
}
free(buf);
close(fd);
return 0;
}
void uwsgi_bind_sockets() {
socklen_t socket_type_len;
union uwsgi_sockaddr usa;
union uwsgi_sockaddr_ptr gsa;
struct uwsgi_socket *uwsgi_sock = uwsgi.sockets;
while (uwsgi_sock) {
if (!uwsgi_sock->bound && !uwsgi_socket_is_already_bound(uwsgi_sock->name)) {
char *tcp_port = strrchr(uwsgi_sock->name, ':');
if (tcp_port == NULL) {
uwsgi_sock->fd = bind_to_unix(uwsgi_sock->name, uwsgi.listen_queue, uwsgi.chmod_socket, uwsgi.abstract_socket);
uwsgi_sock->family = AF_UNIX;
if (uwsgi.chown_socket) {
uwsgi_chown(uwsgi_sock->name, uwsgi.chown_socket);
}
uwsgi_log("uwsgi socket %d bound to UNIX address %s fd %d\n", uwsgi_get_socket_num(uwsgi_sock), uwsgi_sock->name, uwsgi_sock->fd);
}
else {
#ifdef UWSGI_IPV6
if (uwsgi_sock->name[0] == '[' && tcp_port[-1] == ']') {
uwsgi_sock->fd = bind_to_tcp6(uwsgi_sock->name, uwsgi.listen_queue, tcp_port);
uwsgi_log("uwsgi socket %d bound to TCP6 address %s fd %d\n", uwsgi_get_socket_num(uwsgi_sock), uwsgi_sock->name, uwsgi_sock->fd);
uwsgi_sock->family = AF_INET6;
}
else {
#endif
uwsgi_sock->fd = bind_to_tcp(uwsgi_sock->name, uwsgi.listen_queue, tcp_port);
uwsgi_log("uwsgi socket %d bound to TCP address %s fd %d\n", uwsgi_get_socket_num(uwsgi_sock), uwsgi_sock->name, uwsgi_sock->fd);
uwsgi_sock->family = AF_INET;
#ifdef UWSGI_IPV6
}
#endif
}
if (uwsgi_sock->fd < 0 && !uwsgi_sock->per_core) {
uwsgi_log("unable to create server socket on: %s\n", uwsgi_sock->name);
exit(1);
}
}
uwsgi_sock->bound = 1;
uwsgi_sock = uwsgi_sock->next;
}
if (uwsgi.chown_socket) {
if (!uwsgi.master_as_root) {
uwsgi_as_root();
}
}
int zero_used = 0;
uwsgi_sock = uwsgi.sockets;
while (uwsgi_sock) {
if (uwsgi_sock->bound && uwsgi_sock->fd == 0) {
zero_used = 1;
break;
}
uwsgi_sock = uwsgi_sock->next;
}
if (!zero_used) {
socket_type_len = sizeof(struct sockaddr_un);
gsa.sa = (struct sockaddr *) &usa;
if (!uwsgi.skip_zero && !getsockname(0, gsa.sa, &socket_type_len)) {
if (gsa.sa->sa_family == AF_UNIX) {
uwsgi_sock = uwsgi_new_socket(uwsgi_getsockname(0));
uwsgi_sock->family = AF_UNIX;
uwsgi_sock->fd = 0;
uwsgi_sock->bound = 1;
uwsgi_log("uwsgi socket %d inherited UNIX address %s fd 0\n", uwsgi_get_socket_num(uwsgi_sock), uwsgi_sock->name);
}
else {
uwsgi_sock = uwsgi_new_socket(uwsgi_getsockname(0));
uwsgi_sock->family = AF_INET;
uwsgi_sock->fd = 0;
uwsgi_sock->bound = 1;
uwsgi_log("uwsgi socket %d inherited INET address %s fd 0\n", uwsgi_get_socket_num(uwsgi_sock), uwsgi_sock->name);
}
}
else if (!uwsgi.honour_stdin) {
int fd = open("/dev/null", O_RDONLY);
if (fd < 0) {
uwsgi_error_open("/dev/null");
exit(1);
}
if (fd != 0) {
if (dup2(fd, 0) < 0) {
uwsgi_error("dup2()");
exit(1);
}
close(fd);
}
}
else if (uwsgi.honour_stdin) {
if (!tcgetattr(0, &uwsgi.termios)) {
uwsgi.restore_tc = 1;
}
}
}
// check for auto_port socket
uwsgi_sock = uwsgi.sockets;
while (uwsgi_sock) {
if (uwsgi_sock->auto_port) {
#ifdef UWSGI_IPV6
if (uwsgi_sock->family == AF_INET6) {
uwsgi_log("uwsgi socket %d bound to TCP6 address %s (port auto-assigned) fd %d\n", uwsgi_get_socket_num(uwsgi_sock), uwsgi_sock->name, uwsgi_sock->fd);
}
else {
#endif
uwsgi_log("uwsgi socket %d bound to TCP address %s (port auto-assigned) fd %d\n", uwsgi_get_socket_num(uwsgi_sock), uwsgi_sock->name, uwsgi_sock->fd);
#ifdef UWSGI_IPV6
}
#endif
}
uwsgi_sock = uwsgi_sock->next;
}
}
void uwsgi_map_sockets() {
struct uwsgi_socket *uwsgi_sock = uwsgi.sockets;
while (uwsgi_sock) {
struct uwsgi_string_list *usl = uwsgi.map_socket;
int enabled = 1;
while (usl) {
char *colon = strchr(usl->value, ':');
if (!colon) {
uwsgi_log("invalid socket mapping, must be socket:worker[,worker...]\n");
exit(1);
}
if ((int) uwsgi_str_num(usl->value, colon - usl->value) == uwsgi_get_socket_num(uwsgi_sock)) {
enabled = 0;
char *p = strtok(colon + 1, ",");
while (p != NULL) {
int w = atoi(p);
if (w < 1 || w > uwsgi.numproc) {
uwsgi_log("invalid worker num: %d\n", w);
exit(1);
}
if (w == uwsgi.mywid) {
enabled = 1;
uwsgi_log("mapped socket %d (%s) to worker %d\n", uwsgi_get_socket_num(uwsgi_sock), uwsgi_sock->name, uwsgi.mywid);
break;
}
p = strtok(NULL, ",");
}
}
usl = usl->next;
}
if (!enabled) {
close(uwsgi_sock->fd);
int fd = open("/dev/null", O_RDONLY);
if (fd < 0) {
uwsgi_error_open("/dev/null");
exit(1);
}
if (fd != uwsgi_sock->fd) {
if (dup2(fd, uwsgi_sock->fd) < 0) {
uwsgi_error("dup2()");
exit(1);
}
close(fd);
}
uwsgi_sock->disabled = 1;
}
uwsgi_sock = uwsgi_sock->next;
}
uwsgi_sock = uwsgi.sockets;
while (uwsgi_sock) {
if (uwsgi_sock->disabled) {
uwsgi_sock = uwsgi_del_socket(uwsgi_sock);
}
else {
uwsgi_sock = uwsgi_sock->next;
}
}
}
/*
CHANGED in 2.0.7: wsgi_req is useless !
*/
char *uwsgi_spool_request(struct wsgi_request *wsgi_req, char *buf, size_t len, char *body, size_t body_len) {
struct timeval tv;
static uint64_t internal_counter = 0;
int fd = -1;
struct spooler_req sr;
if (len > 0xffff) {
uwsgi_log("[uwsgi-spooler] args buffer is limited to 64k, use the 'body' for bigger values\n");
return NULL;
}
// parse the request buffer
memset(&sr, 0, sizeof(struct spooler_req));
uwsgi_hooked_parse(buf, len, spooler_req_parser_hook, &sr);
struct uwsgi_spooler *uspool = uwsgi.spoolers;
if (!uspool) {
uwsgi_log("[uwsgi-spooler] no spooler available\n");
return NULL;
}
// if it is a number, get the spooler by id instead of by name
if (sr.spooler && sr.spooler_len) {
uspool = uwsgi_get_spooler_by_name(sr.spooler, sr.spooler_len);
if (!uspool) {
uwsgi_log("[uwsgi-spooler] unable to find spooler \"%.*s\"\n", sr.spooler_len, sr.spooler);
return NULL;
}
}
// this lock is for threads, the pid value in filename will avoid multiprocess races
uwsgi_lock(uspool->lock);
// we increase it even if the request fails
internal_counter++;
gettimeofday(&tv, NULL);
char *filename = NULL;
size_t filename_len = 0;
if (sr.priority && sr.priority_len) {
filename_len = strlen(uspool->dir) + sr.priority_len + strlen(uwsgi.hostname) + 256;
filename = uwsgi_malloc(filename_len);
int ret = snprintf(filename, filename_len, "%s/%.*s", uspool->dir, (int) sr.priority_len, sr.priority);
if (ret <= 0 || ret >= (int) filename_len) {
uwsgi_log("[uwsgi-spooler] error generating spooler filename\n");
free(filename);
uwsgi_unlock(uspool->lock);
return NULL;
}
// no need to check for errors...
(void) mkdir(filename, 0777);
ret = snprintf(filename, filename_len, "%s/%.*s/uwsgi_spoolfile_on_%s_%d_%llu_%d_%llu_%llu", uspool->dir, (int)sr.priority_len, sr.priority, uwsgi.hostname, (int) getpid(), (unsigned long long) internal_counter, rand(),
(unsigned long long) tv.tv_sec, (unsigned long long) tv.tv_usec);
if (ret <= 0 || ret >=(int) filename_len) {
uwsgi_log("[uwsgi-spooler] error generating spooler filename\n");
free(filename);
uwsgi_unlock(uspool->lock);
return NULL;
}
}
else {
filename_len = strlen(uspool->dir) + strlen(uwsgi.hostname) + 256;
filename = uwsgi_malloc(filename_len);
int ret = snprintf(filename, filename_len, "%s/uwsgi_spoolfile_on_%s_%d_%llu_%d_%llu_%llu", uspool->dir, uwsgi.hostname, (int) getpid(), (unsigned long long) internal_counter,
rand(), (unsigned long long) tv.tv_sec, (unsigned long long) tv.tv_usec);
if (ret <= 0 || ret >= (int) filename_len) {
uwsgi_log("[uwsgi-spooler] error generating spooler filename\n");
free(filename);
uwsgi_unlock(uspool->lock);
return NULL;
}
}
fd = open(filename, O_CREAT | O_EXCL | O_WRONLY, S_IRUSR | S_IWUSR);
if (fd < 0) {
uwsgi_error_open(filename);
free(filename);
uwsgi_unlock(uspool->lock);
return NULL;
}
// now lock the file, it will no be runnable, until the lock is not removed
// a race could come if the spooler take the file before fcntl is called
// in such case the spooler will detect a zeroed file and will retry later
if (uwsgi_fcntl_lock(fd)) {
close(fd);
free(filename);
uwsgi_unlock(uspool->lock);
return NULL;
}
struct uwsgi_header uh;
uh.modifier1 = 17;
uh.modifier2 = 0;
uh.pktsize = (uint16_t) len;
#ifdef __BIG_ENDIAN__
uh.pktsize = uwsgi_swap16(uh.pktsize);
#endif
if (write(fd, &uh, 4) != 4) {
uwsgi_log("[spooler] unable to write header for %s\n", filename);
goto clear;
}
if (write(fd, buf, len) != (ssize_t) len) {
uwsgi_log("[spooler] unable to write args for %s\n", filename);
goto clear;
}
if (body && body_len > 0) {
if ((size_t) write(fd, body, body_len) != body_len) {
uwsgi_log("[spooler] unable to write body for %s\n", filename);
goto clear;
}
}
if (sr.at > 0) {
#ifdef __UCLIBC__
struct timespec ts[2];
ts[0].tv_sec = sr.at;
ts[0].tv_nsec = 0;
ts[1].tv_sec = sr.at;
ts[1].tv_nsec = 0;
if (futimens(fd, ts)) {
uwsgi_error("uwsgi_spooler_request()/futimens()");
}
#else
struct timeval tv[2];
tv[0].tv_sec = sr.at;
tv[0].tv_usec = 0;
tv[1].tv_sec = sr.at;
tv[1].tv_usec = 0;
#ifdef __sun__
if (futimesat(fd, NULL, tv)) {
#else
if (futimes(fd, tv)) {
#endif
uwsgi_error("uwsgi_spooler_request()/futimes()");
}
#endif
}
// here the file will be unlocked too
close(fd);
if (!uwsgi.spooler_quiet)
uwsgi_log("[spooler] written %lu bytes to file %s\n", (unsigned long) len + body_len + 4, filename);
// and here waiting threads can continue
uwsgi_unlock(uspool->lock);
/* wake up the spoolers attached to the specified dir ... (HACKY)
no need to fear races, as USR1 is harmless an all of the uWSGI processes...
it could be a problem if a new process takes the old pid, but modern systems should avoid that
*/
struct uwsgi_spooler *spoolers = uwsgi.spoolers;
while (spoolers) {
if (!strcmp(spoolers->dir, uspool->dir)) {
if (spoolers->pid > 0 && spoolers->running == 0) {
(void) kill(spoolers->pid, SIGUSR1);
}
}
spoolers = spoolers->next;
}
return filename;
clear:
uwsgi_unlock(uspool->lock);
uwsgi_error("uwsgi_spool_request()/write()");
if (unlink(filename)) {
uwsgi_error("uwsgi_spool_request()/unlink()");
}
free(filename);
// unlock the file too
close(fd);
return NULL;
}
void spooler(struct uwsgi_spooler *uspool) {
// prevent process blindly reading stdin to make mess
int nullfd;
// asked by Marco Beri
#ifdef __HAIKU__
#ifdef UWSGI_DEBUG
uwsgi_log("lowering spooler priority to %d\n", B_LOW_PRIORITY);
#endif
set_thread_priority(find_thread(NULL), B_LOW_PRIORITY);
#else
#ifdef UWSGI_DEBUG
uwsgi_log("lowering spooler priority to %d\n", PRIO_MAX);
#endif
setpriority(PRIO_PROCESS, getpid(), PRIO_MAX);
#endif
nullfd = open("/dev/null", O_RDONLY);
if (nullfd < 0) {
uwsgi_error_open("/dev/null");
exit(1);
}
if (nullfd != 0) {
dup2(nullfd, 0);
close(nullfd);
}
int spooler_event_queue = event_queue_init();
int interesting_fd = -1;
if (uwsgi.master_process) {
event_queue_add_fd_read(spooler_event_queue, uwsgi.shared->spooler_signal_pipe[1]);
}
// reset the tasks counter
uspool->tasks = 0;
for (;;) {
if (chdir(uspool->dir)) {
uwsgi_error("chdir()");
exit(1);
}
if (uwsgi.spooler_ordered) {
#ifdef __linux__
spooler_scandir(uspool, NULL);
#else
spooler_readdir(uspool, NULL);
#endif
}
else {
spooler_readdir(uspool, NULL);
}
int timeout = uwsgi.shared->spooler_frequency ? uwsgi.shared->spooler_frequency : uwsgi.spooler_frequency;
if (wakeup > 0) {
timeout = 0;
}
if (event_queue_wait(spooler_event_queue, timeout, &interesting_fd) > 0) {
if (uwsgi.master_process) {
if (interesting_fd == uwsgi.shared->spooler_signal_pipe[1]) {
uwsgi_receive_signal(interesting_fd, "spooler", (int) getpid());
}
}
}
// avoid races
uint64_t tmp_wakeup = wakeup;
if (tmp_wakeup > 0) {
tmp_wakeup--;
}
wakeup = tmp_wakeup;
}
}
/*
extremely complex function for reading resources (files, url...)
need a lot of refactoring...
*/
char *uwsgi_open_and_read(char *url, size_t *size, int add_zero, char *magic_table[]) {
int fd;
struct stat sb;
char *buffer = NULL;
char byte;
ssize_t len;
char *uri, *colon;
char *domain;
char *ip;
int body = 0;
char *magic_buf;
// stdin ?
if (!strcmp(url, "-")) {
buffer = uwsgi_read_fd(0, size, add_zero);
}
// fd ?
else if (!strncmp("fd://", url, 5)) {
fd = atoi(url + 5);
buffer = uwsgi_read_fd(fd, size, add_zero);
}
// exec ?
else if (!strncmp("exec://", url, 5)) {
int cpipe[2];
if (pipe(cpipe)) {
uwsgi_error("pipe()");
exit(1);
}
uwsgi_run_command(url + 7, NULL, cpipe[1]);
buffer = uwsgi_read_fd(cpipe[0], size, add_zero);
close(cpipe[0]);
close(cpipe[1]);
}
// http url ?
else if (!strncmp("http://", url, 7)) {
domain = url + 7;
uri = strchr(domain, '/');
if (!uri) {
uwsgi_log("invalid http url\n");
exit(1);
}
uri[0] = 0;
uwsgi_log("domain: %s\n", domain);
colon = uwsgi_get_last_char(domain, ':');
if (colon) {
colon[0] = 0;
}
ip = uwsgi_resolve_ip(domain);
if (!ip) {
uwsgi_log("unable to resolve address %s\n", domain);
exit(1);
}
if (colon) {
colon[0] = ':';
ip = uwsgi_concat2(ip, colon);
}
else {
ip = uwsgi_concat2(ip, ":80");
}
fd = uwsgi_connect(ip, 0, 0);
if (fd < 0) {
exit(1);
}
free(ip);
uri[0] = '/';
len = write(fd, "GET ", 4);
len = write(fd, uri, strlen(uri));
len = write(fd, " HTTP/1.0\r\n", 11);
len = write(fd, "Host: ", 6);
uri[0] = 0;
len = write(fd, domain, strlen(domain));
uri[0] = '/';
len = write(fd, "\r\nUser-Agent: uWSGI on ", 23);
len = write(fd, uwsgi.hostname, uwsgi.hostname_len);
len = write(fd, "\r\n\r\n", 4);
int http_status_code_ptr = 0;
while (read(fd, &byte, 1) == 1) {
if (byte == '\r' && body == 0) {
body = 1;
}
else if (byte == '\n' && body == 1) {
body = 2;
}
else if (byte == '\r' && body == 2) {
body = 3;
}
else if (byte == '\n' && body == 3) {
body = 4;
}
else if (body == 4) {
*size = *size + 1;
char *tmp = realloc(buffer, *size);
if (!tmp) {
uwsgi_error("uwsgi_open_and_read()/realloc()");
exit(1);
}
buffer = tmp;
buffer[*size - 1] = byte;
}
else {
body = 0;
http_status_code_ptr++;
if (http_status_code_ptr == 10) {
if (byte != '2') {
uwsgi_log("Not usable HTTP response: %cxx\n", byte);
if (uwsgi.has_emperor) {
exit(UWSGI_EXILE_CODE);
}
else {
exit(1);
}
}
}
}
}
close(fd);
if (add_zero) {
*size = *size + 1;
char *tmp = realloc(buffer, *size);
if (!tmp) {
uwsgi_error("uwsgi_open_and_read()/realloc()");
exit(1);
}
buffer = tmp;
buffer[*size - 1] = 0;
}
}
else if (!strncmp("emperor://", url, 10)) {
if (uwsgi.emperor_fd_config < 0) {
uwsgi_log("this is not a vassal instance\n");
exit(1);
}
ssize_t rlen;
*size = 0;
struct uwsgi_header uh;
size_t remains = 4;
char *ptr = (char *) &uh;
while(remains) {
int ret = uwsgi_waitfd(uwsgi.emperor_fd_config, 5);
if (ret <= 0) {
uwsgi_log("[uwsgi-vassal] error waiting for config header %s !!!\n", url);
exit(1);
}
rlen = read(uwsgi.emperor_fd_config, ptr, remains);
if (rlen <= 0) {
uwsgi_log("[uwsgi-vassal] error reading config header from !!!\n", url);
exit(1);
}
ptr+=rlen;
remains-=rlen;
}
remains = uh.pktsize;
if (!remains) {
uwsgi_log("[uwsgi-vassal] invalid config from %s\n", url);
exit(1);
}
buffer = uwsgi_calloc(remains + add_zero);
ptr = buffer;
while (remains) {
int ret = uwsgi_waitfd(uwsgi.emperor_fd_config, 5);
if (ret <= 0) {
uwsgi_log("[uwsgi-vassal] error waiting for config %s !!!\n", url);
exit(1);
}
rlen = read(uwsgi.emperor_fd_config, ptr, remains);
if (rlen <= 0) {
uwsgi_log("[uwsgi-vassal] error reading config from !!!\n", url);
exit(1);
}
ptr+=rlen;
remains-=rlen;
}
*size = uh.pktsize + add_zero;
}
#ifdef UWSGI_EMBED_CONFIG
else if (url[0] == 0) {
*size = &UWSGI_EMBED_CONFIG_END - &UWSGI_EMBED_CONFIG;
if (add_zero) {
*size += 1;
}
buffer = uwsgi_malloc(*size);
memset(buffer, 0, *size);
memcpy(buffer, &UWSGI_EMBED_CONFIG, &UWSGI_EMBED_CONFIG_END - &UWSGI_EMBED_CONFIG);
}
#endif
else if (!strncmp("data://", url, 7)) {
fd = open(uwsgi.binary_path, O_RDONLY);
if (fd < 0) {
uwsgi_error_open(uwsgi.binary_path);
exit(1);
}
int slot = atoi(url + 7);
if (slot < 0) {
uwsgi_log("invalid binary data slot requested\n");
exit(1);
}
uwsgi_log("requesting binary data slot %d\n", slot);
off_t fo = lseek(fd, 0, SEEK_END);
if (fo < 0) {
uwsgi_error("lseek()");
uwsgi_log("invalid binary data slot requested\n");
exit(1);
}
int i = 0;
uint64_t datasize = 0;
for (i = 0; i <= slot; i++) {
fo = lseek(fd, -9, SEEK_CUR);
if (fo < 0) {
uwsgi_error("lseek()");
uwsgi_log("invalid binary data slot requested\n");
exit(1);
}
ssize_t len = read(fd, &datasize, 8);
if (len != 8) {
uwsgi_error("read()");
uwsgi_log("invalid binary data slot requested\n");
exit(1);
}
if (datasize == 0) {
uwsgi_log("0 size binary data !!!\n");
exit(1);
}
fo = lseek(fd, -(datasize + 9), SEEK_CUR);
if (fo < 0) {
uwsgi_error("lseek()");
uwsgi_log("invalid binary data slot requested\n");
exit(1);
}
if (i == slot) {
*size = datasize;
if (add_zero) {
*size += 1;
}
buffer = uwsgi_malloc(*size);
memset(buffer, 0, *size);
len = read(fd, buffer, datasize);
if (len != (ssize_t) datasize) {
uwsgi_error("read()");
uwsgi_log("invalid binary data slot requested\n");
exit(1);
}
}
}
}
else if (!strncmp("sym://", url, 6)) {
char *symbol = uwsgi_concat3("_binary_", url + 6, "_start");
void *sym_start_ptr = dlsym(RTLD_DEFAULT, symbol);
if (!sym_start_ptr) {
uwsgi_log("unable to find symbol %s\n", symbol);
exit(1);
}
free(symbol);
symbol = uwsgi_concat3("_binary_", url + 6, "_end");
void *sym_end_ptr = dlsym(RTLD_DEFAULT, symbol);
if (!sym_end_ptr) {
uwsgi_log("unable to find symbol %s\n", symbol);
exit(1);
}
free(symbol);
*size = sym_end_ptr - sym_start_ptr;
if (add_zero) {
*size += 1;
}
buffer = uwsgi_malloc(*size);
memset(buffer, 0, *size);
memcpy(buffer, sym_start_ptr, sym_end_ptr - sym_start_ptr);
}
#ifdef UWSGI_ELF
else if (!strncmp("section://", url, 10)) {
size_t s_len = 0;
buffer = uwsgi_elf_section(uwsgi.binary_path, url + 10, &s_len);
if (!buffer) {
uwsgi_log("unable to find section %s in %s\n", url + 10, uwsgi.binary_path);
exit(1);
}
*size = s_len;
if (add_zero)
*size += 1;
}
#endif
// fallback to file
else {
fd = open(url, O_RDONLY);
if (fd < 0) {
uwsgi_error_open(url);
exit(1);
}
if (fstat(fd, &sb)) {
uwsgi_error("fstat()");
exit(1);
}
if (S_ISFIFO(sb.st_mode)) {
buffer = uwsgi_read_fd(fd, size, add_zero);
close(fd);
goto end;
}
buffer = uwsgi_malloc(sb.st_size + add_zero);
len = read(fd, buffer, sb.st_size);
if (len != sb.st_size) {
uwsgi_error("read()");
exit(1);
}
close(fd);
*size = sb.st_size + add_zero;
if (add_zero)
buffer[sb.st_size] = 0;
}
end:
if (magic_table) {
magic_buf = magic_sub(buffer, *size, size, magic_table);
free(buffer);
return magic_buf;
}
return buffer;
}
char *uwsgi_upload_progress_create(struct wsgi_request *wsgi_req, int *fd) {
const char *x_progress_id = "X-Progress-ID=";
char *xpi_ptr = (char *) x_progress_id;
uint16_t i;
char *upload_progress_filename = NULL;
if (wsgi_req->uri_len <= 51)
return NULL;
for (i = 0; i < wsgi_req->uri_len; i++) {
if (wsgi_req->uri[i] == xpi_ptr[0]) {
if (xpi_ptr[0] == '=') {
if (wsgi_req->uri + i + 36 <= wsgi_req->uri + wsgi_req->uri_len) {
upload_progress_filename = wsgi_req->uri + i + 1;
}
break;
}
xpi_ptr++;
}
else {
xpi_ptr = (char *) x_progress_id;
}
}
// now check for valid uuid (from spec available at http://en.wikipedia.org/wiki/Universally_unique_identifier)
if (!upload_progress_filename)
return NULL;
uwsgi_log("upload progress uuid = %.*s\n", 36, upload_progress_filename);
if (!check_hex(upload_progress_filename, 8))
return NULL;
if (upload_progress_filename[8] != '-')
return NULL;
if (!check_hex(upload_progress_filename + 9, 4))
return NULL;
if (upload_progress_filename[13] != '-')
return NULL;
if (!check_hex(upload_progress_filename + 14, 4))
return NULL;
if (upload_progress_filename[18] != '-')
return NULL;
if (!check_hex(upload_progress_filename + 19, 4))
return NULL;
if (upload_progress_filename[23] != '-')
return NULL;
if (!check_hex(upload_progress_filename + 24, 12))
return NULL;
upload_progress_filename = uwsgi_concat4n(uwsgi.upload_progress, strlen(uwsgi.upload_progress), "/", 1, upload_progress_filename, 36, ".js", 3);
// here we use O_EXCL to avoid eventual application bug in uuid generation/using
*fd = open(upload_progress_filename, O_WRONLY | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR | S_IRGRP);
if (*fd < 0) {
uwsgi_error_open(upload_progress_filename);
free(upload_progress_filename);
return NULL;
}
return upload_progress_filename;
}
static int uwsgi_mongrel2_json_parse(json_t * root, struct wsgi_request *wsgi_req) {
char *json_val;
char *query_string = NULL;
size_t query_string_len = 0;
size_t script_name_len = 0;
void *json_iter;
char *json_key;
json_t *json_value;
if ((json_val = uwsgi_mongrel2_json_get_string(root, "METHOD"))) {
if (!strcmp(json_val, "JSON")) {
return -1;
}
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "REQUEST_METHOD", 14, json_val, strlen(json_val));
}
// pretty easy, we get the file and we map it to wsgi_req->post_file, uWSGI read api will automatically use this
if ((json_val = uwsgi_mongrel2_json_get_string(root, "x-mongrel2-upload-done"))) {
wsgi_req->post_file = fopen(json_val, "r");
if (!wsgi_req->post_file) {
uwsgi_error_open(json_val);
return -1;
}
}
else if (uwsgi_mongrel2_json_get_string(root, "x-mongrel2-upload-start")) {
return -1;
}
wsgi_req->uh->pktsize += uwsgi_mongrel2_json_add(wsgi_req, root, "VERSION", "SERVER_PROTOCOL", 15, NULL, NULL);
wsgi_req->uh->pktsize += uwsgi_mongrel2_json_add(wsgi_req, root, "QUERY", "QUERY_STRING", 12, &query_string, &query_string_len);
if (query_string == NULL) {
// always set QUERY_STRING
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "QUERY_STRING", 12, "", 0);
}
// set SCRIPT_NAME to an empty value
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "SCRIPT_NAME", 11, "", 0);
if ((json_val = uwsgi_mongrel2_json_get_string(root, "PATH"))) {
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "PATH_INFO", 9, json_val + script_name_len, strlen(json_val + script_name_len));
if (query_string_len) {
char *request_uri = uwsgi_concat3n(json_val, strlen(json_val), "?", 1, query_string, query_string_len);
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "REQUEST_URI", 11, request_uri, strlen(json_val) + 1 + query_string_len);
free(request_uri);
}
else {
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "REQUEST_URI", 11, json_val, strlen(json_val));
}
}
if ((json_val = uwsgi_mongrel2_json_get_string(root, "URL_SCHEME"))) {
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "UWSGI_SCHEME", 12, json_val, strlen(json_val));
}
if ((json_val = uwsgi_mongrel2_json_get_string(root, "host"))) {
char *colon = strchr(json_val, ':');
if (colon) {
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "SERVER_PORT", 11, colon + 1, strlen(colon + 1));
}
else {
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "SERVER_PORT", 11, "80", 2);
}
}
if ((json_val = uwsgi_mongrel2_json_get_string(root, "x-forwarded-for"))) {
char *colon = strchr(json_val, ',');
if (colon) {
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "REMOTE_ADDR", 11, colon + 1, (colon + 1) - json_val);
}
else {
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "REMOTE_ADDR", 11, json_val, strlen(json_val));
}
}
if ((json_val = uwsgi_mongrel2_json_get_string(root, "content-length"))) {
wsgi_req->post_cl = atoi(json_val);
}
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "SERVER_NAME", 11, uwsgi.hostname, uwsgi.hostname_len);
json_iter = json_object_iter(root);
while (json_iter) {
json_key = (char *) json_object_iter_key(json_iter);
// is it a header ?
if (json_key[0] >= 97) {
json_value = json_object_iter_value(json_iter);
if (json_is_string(json_value)) {
json_val = (char *) json_string_value(json_value);
wsgi_req->uh->pktsize += proto_base_add_uwsgi_header(wsgi_req, json_key, strlen(json_key), json_val, strlen(json_val));
}
}
json_iter = json_object_iter_next(root, json_iter);
}
return 0;
}
int spool_request(struct uwsgi_spooler *uspool, char *filename, int rn, int core_id, char *buffer, int size, char *priority, time_t at, char *body, size_t body_len) {
struct timeval tv;
int fd;
struct uwsgi_header uh;
if (!uspool) {
uspool = uwsgi.spoolers;
}
// this lock is for threads, the pid value in filename will avoid multiprocess races
uwsgi_lock(uspool->lock);
gettimeofday(&tv, NULL);
if (priority) {
if (snprintf(filename, 1024, "%s/%s", uspool->dir, priority) <= 0) {
uwsgi_unlock(uspool->lock);
return 0;
}
// no need to check for errors...
(void) mkdir(filename, 0777);
if (snprintf(filename, 1024, "%s/%s/uwsgi_spoolfile_on_%s_%d_%d_%d_%llu_%llu", uspool->dir, priority, uwsgi.hostname, (int) getpid(), rn, core_id, (unsigned long long) tv.tv_sec, (unsigned long long) tv.tv_usec) <= 0) {
uwsgi_unlock(uspool->lock);
return 0;
}
}
else {
if (snprintf(filename, 1024, "%s/uwsgi_spoolfile_on_%s_%d_%d_%d_%llu_%llu", uspool->dir, uwsgi.hostname, (int) getpid(), rn, core_id, (unsigned long long) tv.tv_sec, (unsigned long long) tv.tv_usec) <= 0) {
uwsgi_unlock(uspool->lock);
return 0;
}
}
fd = open(filename, O_CREAT | O_EXCL | O_WRONLY, S_IRUSR | S_IWUSR);
if (fd < 0) {
uwsgi_error_open(filename);
uwsgi_unlock(uspool->lock);
return 0;
}
// now lock the file, it will no be runnable, until the lock is not removed
// a race could come if the spooler take the file before fcntl is called
// in such case the spooler will detect a zeroed file and will retry later
if (uwsgi_fcntl_lock(fd)) {
close(fd);
uwsgi_unlock(uspool->lock);
return 0;
}
uh.modifier1 = 17;
uh.modifier2 = 0;
uh.pktsize = (uint16_t) size;
#ifdef __BIG_ENDIAN__
uh.pktsize = uwsgi_swap16(uh.pktsize);
#endif
if (write(fd, &uh, 4) != 4) {
goto clear;
}
if (write(fd, buffer, size) != size) {
goto clear;
}
if (body && body_len > 0) {
if ((size_t)write(fd, body, body_len) != body_len) {
goto clear;
}
}
if (at > 0) {
struct timeval tv[2];
tv[0].tv_sec = at;
tv[0].tv_usec = 0;
tv[1].tv_sec = at;
tv[1].tv_usec = 0;
#ifdef __sun__
if (futimesat(fd, NULL, tv)) {
#else
if (futimes(fd, tv)) {
#endif
uwsgi_error("futimes()");
}
}
// here the file will be unlocked too
close(fd);
if (!uwsgi.spooler_quiet)
uwsgi_log("[spooler] written %d bytes to file %s\n", size + body_len + 4, filename);
// and here waiting threads can continue
uwsgi_unlock(uspool->lock);
/* wake up the spoolers attached to the specified dir ... (HACKY)
no need to fear races, as USR1 is harmless an all of the uWSGI processes...
it could be a problem if a new process takes the old pid, but modern systems should avoid that
*/
struct uwsgi_spooler *spoolers = uwsgi.spoolers;
while(spoolers) {
if (!strcmp(spoolers->dir, uspool->dir)) {
if (spoolers->pid > 0 && spoolers->running == 0) {
(void) kill(spoolers->pid, SIGUSR1);
}
}
spoolers = spoolers->next;
}
return 1;
clear:
uwsgi_unlock(uspool->lock);
uwsgi_error("write()");
if (unlink(filename)) {
uwsgi_error("unlink()");
}
// unlock the file too
close(fd);
return 0;
}
void spooler(struct uwsgi_spooler *uspool) {
// prevent process blindly reading stdin to make mess
int nullfd;
// asked by Marco Beri
#ifdef __HAIKU__
#ifdef UWSGI_DEBUG
uwsgi_log("lowering spooler priority to %d\n", B_LOW_PRIORITY);
#endif
set_thread_priority(find_thread(NULL), B_LOW_PRIORITY);
#else
#ifdef UWSGI_DEBUG
uwsgi_log("lowering spooler priority to %d\n", PRIO_MAX);
#endif
setpriority(PRIO_PROCESS, getpid(), PRIO_MAX);
#endif
nullfd = open("/dev/null", O_RDONLY);
if (nullfd < 0) {
uwsgi_error_open("/dev/null");
exit(1);
}
if (nullfd != 0) {
dup2(nullfd, 0);
close(nullfd);
}
int spooler_event_queue = event_queue_init();
int interesting_fd = -1;
if (uwsgi.master_process) {
event_queue_add_fd_read(spooler_event_queue, uwsgi.shared->spooler_signal_pipe[1]);
}
// reset the tasks counter
uspool->tasks = 0;
for (;;) {
if (chdir(uspool->dir)) {
uwsgi_error("chdir()");
exit(1);
}
if (uwsgi.spooler_ordered) {
#ifdef __linux__
spooler_scandir(uspool, NULL);
#else
spooler_readdir(uspool, NULL);
#endif
}
else {
spooler_readdir(uspool, NULL);
}
int timeout = uwsgi.shared->spooler_frequency;
if (wakeup > 0) {
timeout = 0;
}
if (event_queue_wait(spooler_event_queue, timeout, &interesting_fd) > 0) {
if (uwsgi.master_process) {
if (interesting_fd == uwsgi.shared->spooler_signal_pipe[1]) {
uwsgi_receive_signal(interesting_fd, "spooler", (int) getpid());
}
}
}
// avoid races
uint64_t tmp_wakeup = wakeup;
if (tmp_wakeup > 0) {
tmp_wakeup--;
}
wakeup = tmp_wakeup;
// need to recycle ?
if (uwsgi.spooler_max_tasks > 0 && uspool->tasks >= (uint64_t)uwsgi.spooler_max_tasks) {
uwsgi_log("[spooler %s pid: %d] maximum number of tasks reached (%d) recycling ...\n", uspool->dir, (int) uwsgi.mypid, uwsgi.spooler_max_tasks);
end_me(0);
}
}
}
void spooler_manage_task(struct uwsgi_spooler *uspool, char *dir, char *task) {
int i, ret;
char spool_buf[0xffff];
struct uwsgi_header uh;
char *body = NULL;
size_t body_len = 0;
int spool_fd;
if (!dir) dir = uspool->dir;
if (!strncmp("uwsgi_spoolfile_on_", task, 19) || (uwsgi.spooler_ordered && is_a_number(task))) {
struct stat sf_lstat;
if (lstat(task, &sf_lstat)) {
return;
}
// a spool request for the future
if (sf_lstat.st_mtime > uwsgi_now()) {
return;
}
#ifdef __linux__
if (S_ISDIR(sf_lstat.st_mode) && uwsgi.spooler_ordered) {
if (chdir(task)) {
uwsgi_error("chdir()");
return;
}
char *prio_path = realpath(".", NULL);
spooler_scandir(uspool, prio_path);
free(prio_path);
if (chdir(dir)) {
uwsgi_error("chdir()");
}
return;
}
#endif
if (!S_ISREG(sf_lstat.st_mode)) {
return;
}
if (!access(task, R_OK | W_OK)) {
spool_fd = open(task, O_RDWR);
if (spool_fd < 0) {
if (errno != ENOENT)
uwsgi_error_open(task);
return;
}
// check if the file is locked by another process
if (uwsgi_fcntl_is_locked(spool_fd)) {
uwsgi_protected_close(spool_fd);
return;
}
// unlink() can destroy the lock !!!
if (access(task, R_OK | W_OK)) {
uwsgi_protected_close(spool_fd);
return;
}
ssize_t rlen = uwsgi_protected_read(spool_fd, &uh, 4);
if (rlen != 4) {
// it could be here for broken file or just opened one
if (rlen < 0)
uwsgi_error("read()");
uwsgi_protected_close(spool_fd);
return;
}
#ifdef __BIG_ENDIAN__
uh.pktsize = uwsgi_swap16(uh.pktsize);
#endif
if (uwsgi_protected_read(spool_fd, spool_buf, uh.pktsize) != uh.pktsize) {
uwsgi_error("read()");
destroy_spool(dir, task);
uwsgi_protected_close(spool_fd);
return;
}
// body available ?
if (sf_lstat.st_size > (uh.pktsize+4)) {
body_len = sf_lstat.st_size - (uh.pktsize+4);
body = uwsgi_malloc(body_len);
if ((size_t)uwsgi_protected_read(spool_fd, body, body_len) != body_len) {
uwsgi_error("read()");
destroy_spool(dir, task);
uwsgi_protected_close(spool_fd);
free(body);
return;
}
}
// now the task is running and should not be waken up
uspool->running = 1;
if (!uwsgi.spooler_quiet)
uwsgi_log("[spooler %s pid: %d] managing request %s ...\n", uspool->dir, (int) uwsgi.mypid, task);
// chdir before running the task (if requested)
if (uwsgi.spooler_chdir) {
if (chdir(uwsgi.spooler_chdir)) {
uwsgi_error("chdir()");
}
}
int callable_found = 0;
for(i=0; i<256; i++) {
if (uwsgi.p[i]->spooler) {
time_t now = uwsgi_now();
if(uwsgi.shared->options[UWSGI_OPTION_SPOOLER_HARAKIRI] > 0) {
set_spooler_harakiri(uwsgi.shared->options[UWSGI_OPTION_SPOOLER_HARAKIRI]);
}
ret = uwsgi.p[i]->spooler(task, spool_buf, uh.pktsize, body, body_len);
if(uwsgi.shared->options[UWSGI_OPTION_SPOOLER_HARAKIRI] > 0) {
set_spooler_harakiri(0);
}
if (ret == 0) continue;
callable_found = 1;
// increase task counter
uspool->tasks++;
if (ret == -2) {
if (!uwsgi.spooler_quiet)
uwsgi_log("[spooler %s pid: %d] done with task %s after %d seconds\n", uspool->dir, (int) uwsgi.mypid, task, uwsgi_now()-now);
destroy_spool(dir, task);
}
// re-spool it
break;
}
}
if (body)
free(body);
// here we free and unlock the task
uwsgi_protected_close(spool_fd);
uspool->running = 0;
if (chdir(dir)) {
uwsgi_error("chdir()");
uwsgi_log("[spooler] something horrible happened to the spooler. Better to kill it.\n");
exit(1);
}
if (!callable_found) {
uwsgi_log("unable to find the spooler function, have you loaded it into the spooler process ?\n");
}
}
}
}
void spooler_manage_task(struct uwsgi_spooler *uspool, char *dir, char *task) {
int i, ret;
char spool_buf[0xffff];
struct uwsgi_header uh;
char *body = NULL;
size_t body_len = 0;
int spool_fd;
if (!dir)
dir = uspool->dir;
if (!strncmp("uwsgi_spoolfile_on_", task, 19) || (uwsgi.spooler_ordered && is_a_number(task))) {
struct stat sf_lstat;
if (lstat(task, &sf_lstat)) {
return;
}
// a spool request for the future
if (sf_lstat.st_mtime > uwsgi_now()) {
return;
}
if (S_ISDIR(sf_lstat.st_mode) && uwsgi.spooler_ordered) {
if (chdir(task)) {
uwsgi_error("spooler_manage_task()/chdir()");
return;
}
#ifdef __UCLIBC__
char *prio_path = uwsgi_malloc(PATH_MAX);
realpath(".", prio_path);
#else
char *prio_path = realpath(".", NULL);
#endif
spooler_scandir(uspool, prio_path);
free(prio_path);
if (chdir(dir)) {
uwsgi_error("spooler_manage_task()/chdir()");
}
return;
}
if (!S_ISREG(sf_lstat.st_mode)) {
return;
}
if (!access(task, R_OK | W_OK)) {
spool_fd = open(task, O_RDWR);
if (spool_fd < 0) {
if (errno != ENOENT)
uwsgi_error_open(task);
return;
}
if (uwsgi_spooler_read_header(task, spool_fd, &uh))
return;
// access lstat second time after getting a lock
// first-time lstat could be dirty (for example between writes in master)
if (lstat(task, &sf_lstat)) {
return;
}
if (uwsgi_spooler_read_content(spool_fd, spool_buf, &body, &body_len, &uh, &sf_lstat)) {
destroy_spool(dir, task);
return;
}
// now the task is running and should not be woken up
uspool->running = 1;
// this is used in cheap mode for making decision about who must die
uspool->last_task_managed = uwsgi_now();
if (!uwsgi.spooler_quiet)
uwsgi_log("[spooler %s pid: %d] managing request %s ...\n", uspool->dir, (int) uwsgi.mypid, task);
// chdir before running the task (if requested)
if (uwsgi.spooler_chdir) {
if (chdir(uwsgi.spooler_chdir)) {
uwsgi_error("spooler_manage_task()/chdir()");
}
}
int callable_found = 0;
for (i = 0; i < 256; i++) {
if (uwsgi.p[i]->spooler) {
time_t now = uwsgi_now();
if (uwsgi.harakiri_options.spoolers > 0) {
set_spooler_harakiri(uwsgi.harakiri_options.spoolers);
}
ret = uwsgi.p[i]->spooler(task, spool_buf, uh._pktsize, body, body_len);
if (uwsgi.harakiri_options.spoolers > 0) {
set_spooler_harakiri(0);
}
if (ret == 0)
continue;
callable_found = 1;
// increase task counter
uspool->tasks++;
if (ret == -2) {
if (!uwsgi.spooler_quiet)
uwsgi_log("[spooler %s pid: %d] done with task %s after %lld seconds\n", uspool->dir, (int) uwsgi.mypid, task, (long long) uwsgi_now() - now);
destroy_spool(dir, task);
}
// re-spool it
break;
}
}
if (body)
free(body);
// here we free and unlock the task
uwsgi_protected_close(spool_fd);
uspool->running = 0;
// need to recycle ?
if (uwsgi.spooler_max_tasks > 0 && uspool->tasks >= (uint64_t) uwsgi.spooler_max_tasks) {
uwsgi_log("[spooler %s pid: %d] maximum number of tasks reached (%d) recycling ...\n", uspool->dir, (int) uwsgi.mypid, uwsgi.spooler_max_tasks);
end_me(0);
}
if (chdir(dir)) {
uwsgi_error("chdir()");
uwsgi_log("[spooler] something horrible happened to the spooler. Better to kill it.\n");
exit(1);
}
if (!callable_found) {
uwsgi_log("unable to find the spooler function, have you loaded it into the spooler process ?\n");
}
}
}
}
int init_psgi_app(struct wsgi_request *wsgi_req, char *app, uint16_t app_len, PerlInterpreter **interpreters) {
struct stat st;
int i;
SV **callables;
time_t now = uwsgi_now();
char *app_name = uwsgi_concat2n(app, app_len, "", 0);
// prepare for $0
uperl.embedding[1] = app_name;
int fd = open(app_name, O_RDONLY);
if (fd < 0) {
uwsgi_error_open(app_name);
goto clear2;
}
if (fstat(fd, &st)) {
uwsgi_error("fstat()");
close(fd);
goto clear2;
}
char *buf = uwsgi_calloc(st.st_size+1);
if (read(fd, buf, st.st_size) != st.st_size) {
uwsgi_error("read()");
close(fd);
free(buf);
goto clear2;
}
close(fd);
// the first (default) app, should always be loaded in the main interpreter
if (interpreters == NULL) {
if (uwsgi_apps_cnt) {
interpreters = uwsgi_calloc(sizeof(PerlInterpreter *) * uwsgi.threads);
interpreters[0] = uwsgi_perl_new_interpreter();
if (!interpreters[0]) {
uwsgi_log("unable to create new perl interpreter\n");
free(interpreters);
goto clear2;
}
}
else {
interpreters = uperl.main;
}
}
if (!interpreters) {
goto clear2;
}
callables = uwsgi_calloc(sizeof(SV *) * uwsgi.threads);
uperl.tmp_streaming_stash = uwsgi_calloc(sizeof(HV *) * uwsgi.threads);
uperl.tmp_input_stash = uwsgi_calloc(sizeof(HV *) * uwsgi.threads);
uperl.tmp_error_stash = uwsgi_calloc(sizeof(HV *) * uwsgi.threads);
uperl.tmp_stream_responder = uwsgi_calloc(sizeof(CV *) * uwsgi.threads);
uperl.tmp_psgix_logger = uwsgi_calloc(sizeof(CV *) * uwsgi.threads);
for(i=0;i<uwsgi.threads;i++) {
if (i > 0 && interpreters != uperl.main) {
interpreters[i] = uwsgi_perl_new_interpreter();
if (!interpreters[i]) {
uwsgi_log("unable to create new perl interpreter\n");
// what to do here ? i hope no-one will use threads with dynamic apps...but clear the whole stuff...
free(callables);
uwsgi_perl_free_stashes();
while(i>=0) {
perl_destruct(interpreters[i]);
perl_free(interpreters[i]);
goto clear2;
}
}
}
PERL_SET_CONTEXT(interpreters[i]);
uperl.tmp_current_i = i;
if (uperl.locallib) {
uwsgi_log("using %s as local::lib directory\n", uperl.locallib);
uperl.embedding[1] = uwsgi_concat2("-Mlocal::lib=", uperl.locallib);
uperl.embedding[2] = app_name;
if (perl_parse(interpreters[i], xs_init, 3, uperl.embedding, NULL)) {
// what to do here ? i hope no-one will use threads with dynamic apps... but clear the whole stuff...
free(uperl.embedding[1]);
uperl.embedding[1] = app_name;
free(callables);
uwsgi_perl_free_stashes();
goto clear;
}
free(uperl.embedding[1]);
uperl.embedding[1] = app_name;
}
else {
if (perl_parse(interpreters[i], xs_init, 2, uperl.embedding, NULL)) {
// what to do here ? i hope no-one will use threads with dynamic apps... but clear the whole stuff...
free(callables);
uwsgi_perl_free_stashes();
goto clear;
}
}
perl_eval_pv("use IO::Handle;", 0);
perl_eval_pv("use IO::File;", 0);
perl_eval_pv("use Scalar::Util;", 0);
if (!uperl.no_die_catch) {
perl_eval_pv("use Devel::StackTrace;", 0);
if (!SvTRUE(ERRSV)) {
uperl.stacktrace_available = 1;
perl_eval_pv("$SIG{__DIE__} = \\&uwsgi::stacktrace;", 0);
}
}
SV *dollar_zero = get_sv("0", GV_ADD);
sv_setsv(dollar_zero, newSVpv(app, app_len));
callables[i] = perl_eval_pv(uwsgi_concat4("#line 1 ", app_name, "\n", buf), 0);
if (!callables[i]) {
uwsgi_log("unable to find PSGI function entry point.\n");
// what to do here ? i hope no-one will use threads with dynamic apps...
free(callables);
uwsgi_perl_free_stashes();
goto clear;
}
PERL_SET_CONTEXT(interpreters[0]);
}
free(buf);
if(SvTRUE(ERRSV)) {
uwsgi_log("%s\n", SvPV_nolen(ERRSV));
free(callables);
uwsgi_perl_free_stashes();
goto clear;
}
if (uwsgi_apps_cnt >= uwsgi.max_apps) {
uwsgi_log("ERROR: you cannot load more than %d apps in a worker\n", uwsgi.max_apps);
goto clear;
}
int id = uwsgi_apps_cnt;
struct uwsgi_app *wi = NULL;
if (wsgi_req) {
// we need a copy of app_id
wi = uwsgi_add_app(id, psgi_plugin.modifier1, uwsgi_concat2n(wsgi_req->appid, wsgi_req->appid_len, "", 0), wsgi_req->appid_len, interpreters, callables);
}
else {
wi = uwsgi_add_app(id, psgi_plugin.modifier1, "", 0, interpreters, callables);
}
wi->started_at = now;
wi->startup_time = uwsgi_now() - now;
uwsgi_log("PSGI app %d (%s) loaded in %d seconds at %p (interpreter %p)\n", id, app_name, (int) wi->startup_time, callables[0], interpreters[0]);
free(app_name);
// copy global data to app-specific areas
wi->stream = uperl.tmp_streaming_stash;
wi->input = uperl.tmp_input_stash;
wi->error = uperl.tmp_error_stash;
wi->responder0 = uperl.tmp_stream_responder;
wi->responder1 = uperl.tmp_psgix_logger;
uwsgi_emulate_cow_for_apps(id);
// restore context if required
if (interpreters != uperl.main) {
PERL_SET_CONTEXT(uperl.main[0]);
}
return id;
clear:
if (interpreters != uperl.main) {
for(i=0;i<uwsgi.threads;i++) {
perl_destruct(interpreters[i]);
perl_free(interpreters[i]);
}
free(interpreters);
}
PERL_SET_CONTEXT(uperl.main[0]);
clear2:
free(app_name);
return -1;
}
int uwsgi_emperor_vassal_start(struct uwsgi_instance *n_ui) {
int i;
char *colon = NULL;
int counter;
char **uenvs;
char *uef;
char **vassal_argv;
pid_t pid;
if (socketpair(AF_UNIX, SOCK_STREAM, 0, n_ui->pipe)) {
uwsgi_error("socketpair()");
return -1;
}
event_queue_add_fd_read(uwsgi.emperor_queue, n_ui->pipe[0]);
if (n_ui->use_config) {
if (socketpair(AF_UNIX, SOCK_STREAM, 0, n_ui->pipe_config)) {
uwsgi_error("socketpair()");
return -1;
}
}
if (n_ui->zerg) {
uwsgi.emperor_broodlord_num++;
}
// TODO pre-start hook
// a new uWSGI instance will start
pid = fork();
if (pid < 0) {
uwsgi_error("fork()")
}
else if (pid > 0) {
n_ui->pid = pid;
// close the right side of the pipe
close(n_ui->pipe[1]);
// close the "on demand" socket
if (n_ui->on_demand_fd > -1) {
close(n_ui->on_demand_fd);
n_ui->on_demand_fd = -1;
}
if (n_ui->use_config) {
close(n_ui->pipe_config[1]);
}
if (n_ui->use_config) {
struct uwsgi_header uh;
uh.modifier1 = 115;
uh.pktsize = n_ui->config_len;
uh.modifier2 = 0;
if (write(n_ui->pipe_config[0], &uh, 4) != 4) {
uwsgi_error("[uwsgi-emperor] write() header config");
}
else {
if (write(n_ui->pipe_config[0], n_ui->config, n_ui->config_len) != (long) n_ui->config_len) {
uwsgi_error("[uwsgi-emperor] write() config");
}
}
}
return 0;
}
else {
if (uwsgi.emperor_tyrant) {
uwsgi_log("[emperor-tyrant] dropping privileges to %d %d for instance %s\n", (int) n_ui->uid, (int) n_ui->gid, n_ui->name);
if (setgid(n_ui->gid)) {
uwsgi_error("setgid()");
exit(1);
}
if (setgroups(0, NULL)) {
uwsgi_error("setgroups()");
exit(1);
}
if (setuid(n_ui->uid)) {
uwsgi_error("setuid()");
exit(1);
}
}
unsetenv("UWSGI_RELOADS");
unsetenv("NOTIFY_SOCKET");
uef = uwsgi_num2str(n_ui->pipe[1]);
if (setenv("UWSGI_EMPEROR_FD", uef, 1)) {
uwsgi_error("setenv()");
exit(1);
}
free(uef);
// add UWSGI_BROODLORD_NUM
if (n_ui->zerg) {
uef = uwsgi_num2str(uwsgi.emperor_broodlord_num);
if (setenv("UWSGI_BROODLORD_NUM", uef, 1)) {
uwsgi_error("setenv()");
exit(1);
}
free(uef);
}
if (n_ui->use_config) {
uef = uwsgi_num2str(n_ui->pipe_config[1]);
if (setenv("UWSGI_EMPEROR_FD_CONFIG", uef, 1)) {
uwsgi_error("setenv()");
exit(1);
}
free(uef);
}
uenvs = environ;
while (*uenvs) {
if (!strncmp(*uenvs, "UWSGI_VASSAL_", 13)) {
char *ne = uwsgi_concat2("UWSGI_", *uenvs + 13);
char *oe = uwsgi_concat2n(*uenvs, strchr(*uenvs, '=') - *uenvs, "", 0);
if (unsetenv(oe)) {
uwsgi_error("unsetenv()");
free(oe);
break;
}
free(oe);
#ifdef UWSGI_DEBUG
uwsgi_log("putenv %s\n", ne);
#endif
if (putenv(ne)) {
uwsgi_error("putenv()");
}
// do not free ne as putenv will add it to the environ
uenvs = environ;
continue;
}
uenvs++;
}
// close the left side of the pipe
close(n_ui->pipe[0]);
if (n_ui->use_config) {
close(n_ui->pipe_config[0]);
}
counter = 4;
struct uwsgi_string_list *uct = uwsgi.vassals_templates;
while (uct) {
counter += 2;
uct = uct->next;
}
vassal_argv = uwsgi_malloc(sizeof(char *) * counter);
// set args
vassal_argv[0] = uwsgi.binary_path;
if (uwsgi.emperor_broodlord) {
colon = strchr(n_ui->name, ':');
if (colon) {
colon[0] = 0;
}
}
// initialize to a default value
vassal_argv[1] = "--inherit";
if (!strcmp(n_ui->name + (strlen(n_ui->name) - 4), ".xml"))
vassal_argv[1] = "--xml";
if (!strcmp(n_ui->name + (strlen(n_ui->name) - 4), ".ini"))
vassal_argv[1] = "--ini";
if (!strcmp(n_ui->name + (strlen(n_ui->name) - 4), ".yml"))
vassal_argv[1] = "--yaml";
if (!strcmp(n_ui->name + (strlen(n_ui->name) - 5), ".yaml"))
vassal_argv[1] = "--yaml";
if (!strcmp(n_ui->name + (strlen(n_ui->name) - 3), ".js"))
vassal_argv[1] = "--json";
if (!strcmp(n_ui->name + (strlen(n_ui->name) - 5), ".json"))
vassal_argv[1] = "--json";
struct uwsgi_string_list *usl = uwsgi.emperor_extra_extension;
while(usl) {
if (uwsgi_endswith(n_ui->name, usl->value)) {
vassal_argv[1] = "--config";
break;
}
usl = usl->next;
}
if (colon) {
colon[0] = ':';
}
vassal_argv[2] = n_ui->name;
if (uwsgi.emperor_magic_exec) {
if (!access(n_ui->name, R_OK | X_OK)) {
vassal_argv[2] = uwsgi_concat2("exec://", n_ui->name);
}
}
if (n_ui->use_config) {
vassal_argv[2] = uwsgi_concat2("emperor://", n_ui->name);
}
counter = 3;
uct = uwsgi.vassals_templates;
while (uct) {
vassal_argv[counter] = "--inherit";
vassal_argv[counter + 1] = uct->value;
counter += 2;
uct = uct->next;
}
vassal_argv[counter] = NULL;
// disable stdin OR map it to the "on demand" socket
if (n_ui->on_demand_fd > -1) {
if (n_ui->on_demand_fd != 0) {
if (dup2(n_ui->on_demand_fd, 0) < 0) {
uwsgi_error("dup2()");
exit(1);
}
close(n_ui->on_demand_fd);
}
}
else {
int stdin_fd = open("/dev/null", O_RDONLY);
if (stdin_fd < 0) {
uwsgi_error_open("/dev/null");
exit(1);
}
if (stdin_fd != 0) {
if (dup2(stdin_fd, 0) < 0) {
uwsgi_error("dup2()");
exit(1);
}
close(stdin_fd);
}
}
// close all of the unneded fd
for (i = 3; i < (int) uwsgi.max_fd; i++) {
if (n_ui->use_config) {
if (i == n_ui->pipe_config[1])
continue;
}
if (i != n_ui->pipe[1]) {
close(i);
}
}
if (uwsgi.vassals_start_hook) {
uwsgi_log("[emperor] running vassal start-hook: %s %s\n", uwsgi.vassals_start_hook, n_ui->name);
if (uwsgi.emperor_absolute_dir) {
if (setenv("UWSGI_VASSALS_DIR", uwsgi.emperor_absolute_dir, 1)) {
uwsgi_error("setenv()");
}
}
int start_hook_ret = uwsgi_run_command_and_wait(uwsgi.vassals_start_hook, n_ui->name);
uwsgi_log("[emperor] %s start-hook returned %d\n", n_ui->name, start_hook_ret);
}
// start !!!
if (execvp(vassal_argv[0], vassal_argv)) {
uwsgi_error("execvp()");
}
uwsgi_log("[emperor] is the uwsgi binary in your system PATH ?\n");
// never here
exit(UWSGI_EXILE_CODE);
}
return -1;
}
char *uwsgi_rsa_sign(char *algo_key, char *message, size_t message_len, unsigned int *s_len) {
// openssl could not be initialized
if (!uwsgi.ssl_initialized) {
uwsgi_ssl_init();
}
*s_len = 0;
EVP_PKEY *pk = NULL;
char *algo = uwsgi_str(algo_key);
char *colon = strchr(algo, ':');
if (!colon) {
uwsgi_log("invalid RSA signature syntax, must be: <digest>:<pemfile>\n");
free(algo);
return NULL;
}
*colon = 0;
char *keyfile = colon + 1;
char *signature = NULL;
FILE *kf = fopen(keyfile, "r");
if (!kf) {
uwsgi_error_open(keyfile);
free(algo);
return NULL;
}
if (PEM_read_PrivateKey(kf, &pk, NULL, NULL) == 0) {
uwsgi_log("unable to load private key: %s\n", keyfile);
free(algo);
fclose(kf);
return NULL;
}
fclose(kf);
EVP_MD_CTX *ctx = EVP_MD_CTX_create();
if (!ctx) {
free(algo);
EVP_PKEY_free(pk);
return NULL;
}
const EVP_MD *md = EVP_get_digestbyname(algo);
if (!md) {
uwsgi_log("unknown digest algo: %s\n", algo);
free(algo);
EVP_PKEY_free(pk);
EVP_MD_CTX_destroy(ctx);
return NULL;
}
*s_len = EVP_PKEY_size(pk);
signature = uwsgi_malloc(*s_len);
if (EVP_SignInit_ex(ctx, md, NULL) == 0) {
ERR_print_errors_fp(stderr);
free(signature);
signature = NULL;
*s_len = 0;
goto clear;
}
if (EVP_SignUpdate(ctx, message, message_len) == 0) {
ERR_print_errors_fp(stderr);
free(signature);
signature = NULL;
*s_len = 0;
goto clear;
}
if (EVP_SignFinal(ctx, (unsigned char *) signature, s_len, pk) == 0) {
ERR_print_errors_fp(stderr);
free(signature);
signature = NULL;
*s_len = 0;
goto clear;
}
clear:
free(algo);
EVP_PKEY_free(pk);
EVP_MD_CTX_destroy(ctx);
return signature;
}
void uwsgi_build_plugin(char *directory) {
if (!uwsgi_file_exists(UWSGI_BUILD_DIR)) {
if (mkdir(UWSGI_BUILD_DIR, S_IRWXU) < 0) {
uwsgi_error("uwsgi_build_plugin()/mkdir() " UWSGI_BUILD_DIR "/");
_exit(1);
}
}
char *dot_h = uwsgi_get_dot_h();
if (!dot_h) {
uwsgi_log("unable to generate uwsgi.h");
_exit(1);
}
if (strlen(dot_h) == 0) {
free(dot_h);
uwsgi_log("invalid uwsgi.h");
_exit(1);
}
int dot_h_fd = open(UWSGI_BUILD_DIR "/uwsgi.h", O_WRONLY|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR);
if (dot_h_fd < 0) {
uwsgi_error_open(UWSGI_BUILD_DIR "/uwsgi.h");
free(dot_h);
_exit(1);
}
ssize_t dot_h_len = (ssize_t) strlen(dot_h);
if (write(dot_h_fd, dot_h, dot_h_len) != dot_h_len) {
uwsgi_error("uwsgi_build_plugin()/write()");
_exit(1);
}
char *config_py = uwsgi_get_config_py();
if (!config_py) {
uwsgi_log("unable to generate uwsgiconfig.py");
_exit(1);
}
if (strlen(config_py) == 0) {
uwsgi_log("invalid uwsgiconfig.py");
_exit(1);
}
int config_py_fd = open(UWSGI_BUILD_DIR "/uwsgiconfig.py", O_WRONLY|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR);
if (config_py_fd < 0) {
uwsgi_error_open(UWSGI_BUILD_DIR "/uwsgiconfig.py");
_exit(1);
}
ssize_t config_py_len = (ssize_t) strlen(config_py);
if (write(config_py_fd, config_py, config_py_len) != config_py_len) {
uwsgi_error("uwsgi_build_plugin()/write()");
_exit(1);
}
char *cflags = uwsgi_get_cflags();
if (!cflags) {
uwsgi_log("unable to find cflags\n");
_exit(1);
}
if (strlen(cflags) == 0) {
uwsgi_log("invalid cflags\n");
_exit(1);
}
if (setenv("UWSGI_PLUGINS_BUILDER_CFLAGS", cflags, 1)) {
uwsgi_error("uwsgi_build_plugin()/setenv()");
_exit(1);
}
// now run the python script
char *argv[6];
argv[0] = getenv("PYTHON");
if (!argv[0]) argv[0] = "python";
argv[1] = UWSGI_BUILD_DIR "/uwsgiconfig.py";
argv[2] = "--extra-plugin";
char *space = strchr(directory, ' ');
if (space) {
*space = 0;
argv[3] = directory;
argv[4] = space+1;
argv[5] = NULL;
}
else {
argv[3] = directory;
argv[4] = NULL;
}
execvp(argv[0], argv);
// never here...
_exit(1);
}
void uwsgi_init_queue() {
if (!uwsgi.queue_blocksize)
uwsgi.queue_blocksize = 8192;
if ((uwsgi.queue_blocksize * uwsgi.queue_size) % uwsgi.page_size != 0) {
uwsgi_log("invalid queue size/blocksize %llu: must be a multiple of memory page size (%d bytes)\n", (unsigned long long) uwsgi.queue_blocksize, uwsgi.page_size);
exit(1);
}
if (uwsgi.queue_store) {
uwsgi.queue_filesize = uwsgi.queue_blocksize * uwsgi.queue_size + 16;
int queue_fd;
struct stat qst;
if (stat(uwsgi.queue_store, &qst)) {
uwsgi_log("creating a new queue store file: %s\n", uwsgi.queue_store);
queue_fd = open(uwsgi.queue_store, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR);
if (queue_fd >= 0) {
// fill the queue store
if (ftruncate(queue_fd, uwsgi.queue_filesize)) {
uwsgi_log("ftruncate()");
exit(1);
}
}
}
else {
if ((size_t) qst.st_size != uwsgi.queue_filesize || !S_ISREG(qst.st_mode)) {
uwsgi_log("invalid queue store file. Please remove it or fix queue blocksize/items to match its size\n");
exit(1);
}
queue_fd = open(uwsgi.queue_store, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR);
uwsgi_log("recovered queue from backing store file: %s\n", uwsgi.queue_store);
}
if (queue_fd < 0) {
uwsgi_error_open(uwsgi.queue_store);
exit(1);
}
uwsgi.queue = mmap(NULL, uwsgi.queue_filesize, PROT_READ | PROT_WRITE, MAP_SHARED, queue_fd, 0);
// fix header
uwsgi.queue_header = uwsgi.queue;
uwsgi.queue += 16;
}
else {
uwsgi.queue = mmap(NULL, (uwsgi.queue_blocksize * uwsgi.queue_size) + 16, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
// fix header
uwsgi.queue_header = uwsgi.queue;
uwsgi.queue += 16;
uwsgi.queue_header->pos = 0;
uwsgi.queue_header->pull_pos = 0;
}
if (!uwsgi.queue) {
uwsgi_error("mmap()");
exit(1);
}
uwsgi.queue_lock = uwsgi_rwlock_init("queue");
uwsgi_log("*** Queue subsystem initialized: %dMB preallocated ***\n", (uwsgi.queue_blocksize * uwsgi.queue_size) / (1024 * 1024));
}
// dumb/fake tnetstring implementation...all is a string
static int uwsgi_mongrel2_tnetstring_parse(struct wsgi_request *wsgi_req, char *buf, int len) {
char *ptr = buf;
char *watermark = buf + len;
char *key = NULL;
size_t keylen = 0;
char *val = NULL;
size_t vallen = 0;
uint16_t script_name_len = 0;
char *query_string = NULL;
uint16_t query_string_len = 0;
int async_upload = 0;
// set an empty SCRIPT_NAME
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "SCRIPT_NAME", 11, "", 0);
while (ptr < watermark) {
ptr = uwsgi_netstring(ptr, len - (ptr - buf), &key, &keylen);
if (ptr == NULL)
break;
// empty keys are not allowed
if (keylen == 0)
break;
if (ptr >= watermark)
break;
ptr = uwsgi_netstring(ptr, len - (ptr - buf), &val, &vallen);
if (ptr == NULL)
break;
if (key[0] < 97) {
if (!uwsgi_strncmp("METHOD", 6, key, keylen)) {
if (!uwsgi_strncmp("JSON", 4, val, vallen)) {
return -1;
}
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "REQUEST_METHOD", 14, val, vallen);
}
else if (!uwsgi_strncmp("VERSION", 7, key, keylen)) {
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "SERVER_PROTOCOL", 15, val, vallen);
}
else if (!uwsgi_strncmp("QUERY", 5, key, keylen)) {
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "QUERY_STRING", 12, val, vallen);
query_string = val;
query_string_len = vallen;
}
else if (!uwsgi_strncmp("PATH", 4, key, keylen)) {
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "PATH_INFO", 9, val + script_name_len, vallen - script_name_len);
if (query_string_len) {
char *request_uri = uwsgi_concat3n(val, vallen, "?", 1, query_string, query_string_len);
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "REQUEST_URI", 11, request_uri, vallen + 1 + query_string_len);
free(request_uri);
}
else {
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "REQUEST_URI", 11, val, vallen);
}
}
}
else {
// add header
if (!uwsgi_strncmp("host", 4, key, keylen)) {
char *colon = memchr(val, ':', vallen);
if (colon) {
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "SERVER_PORT", 11, colon + 1, vallen - ((colon + 1) - val));
}
else {
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "SERVER_PORT", 11, "80", 2);
}
}
else if (!uwsgi_strncmp("content-length", 14, key, keylen)) {
wsgi_req->post_cl = uwsgi_str_num(val, vallen);
}
else if (!uwsgi_strncmp("x-mongrel2-upload-done", 22, key, keylen)) {
char *post_filename = uwsgi_concat2n(val, vallen, "", 0);
wsgi_req->post_file = fopen(post_filename, "r");
if (!wsgi_req->post_file) {
uwsgi_error_open(post_filename);
wsgi_req->do_not_log = 1;
}
async_upload += 2;
free(post_filename);
}
else if (!uwsgi_strncmp("x-forwarded-for", 15, key, keylen)) {
char *colon = memchr(val, ',', vallen);
if (colon) {
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "REMOTE_ADDR", 11, colon + 1, (colon + 1) - val);
}
else {
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "REMOTE_ADDR", 11, val, vallen);
}
}
else if (!uwsgi_strncmp("x-mongrel2-upload-start", 23, key, keylen)) {
async_upload += 1;
}
wsgi_req->uh->pktsize += proto_base_add_uwsgi_header(wsgi_req, key, keylen, val, vallen);
}
}
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "SERVER_NAME", 11, uwsgi.hostname, uwsgi.hostname_len);
if (query_string == NULL) {
// always set QUERY_STRING
wsgi_req->uh->pktsize += proto_base_add_uwsgi_var(wsgi_req, "QUERY_STRING", 12, "", 0);
}
// reject uncomplete upload
if (async_upload == 1) {
return -1;
}
return 0;
}
void emperor_add(struct uwsgi_emperor_scanner *ues, char *name, time_t born, char *config, uint32_t config_size, uid_t uid, gid_t gid) {
struct uwsgi_instance *c_ui = ui;
struct uwsgi_instance *n_ui = NULL;
pid_t pid;
char **vassal_argv;
char *uef;
char **uenvs;
int counter;
char *colon = NULL;
int i;
struct timeval tv;
#ifdef UWSGI_DEBUG
uwsgi_log("\n\nVASSAL %s %d %.*s %d %d\n", name, born, config_size, config, uid, gid);
#endif
if (strlen(name) > (0xff - 1)) {
uwsgi_log("[emperor] invalid vassal name\n", name);
return;
}
gettimeofday(&tv, NULL);
int now = tv.tv_sec;
uint64_t micros = (tv.tv_sec * 1000 * 1000) + tv.tv_usec;
// blacklist check
struct uwsgi_emperor_blacklist_item *uebi = uwsgi_emperor_blacklist_check(name);
if (uebi) {
uint64_t i_micros = (uebi->last_attempt.tv_sec * 1000 * 1000) + uebi->last_attempt.tv_usec + uebi->throttle_level;
if (i_micros > micros) {
return;
}
}
if (now - emperor_throttle < 1) {
emperor_throttle_level = emperor_throttle_level * 2;
}
else {
if (emperor_throttle_level > uwsgi.emperor_throttle) {
emperor_throttle_level = emperor_throttle_level / 2;
}
if (emperor_throttle_level < uwsgi.emperor_throttle) {
emperor_throttle_level = uwsgi.emperor_throttle;
}
}
emperor_throttle = now;
#ifdef UWSGI_DEBUG
uwsgi_log("emperor throttle = %d\n", emperor_throttle_level);
#endif
usleep(emperor_throttle_level);
if (uwsgi.emperor_tyrant) {
if (uid == 0 || gid == 0) {
uwsgi_log("[emperor-tyrant] invalid permissions for vassal %s\n", name);
return;
}
}
while (c_ui->ui_next) {
c_ui = c_ui->ui_next;
}
n_ui = uwsgi_malloc(sizeof(struct uwsgi_instance));
memset(n_ui, 0, sizeof(struct uwsgi_instance));
if (config) {
n_ui->use_config = 1;
n_ui->config = config;
n_ui->config_len = config_size;
}
c_ui->ui_next = n_ui;
#ifdef UWSGI_DEBUG
uwsgi_log("c_ui->ui_next = %p\n", c_ui->ui_next);
#endif
n_ui->ui_prev = c_ui;
if (strchr(name, ':')) {
n_ui->zerg = 1;
uwsgi.emperor_broodlord_count++;
}
n_ui->scanner = ues;
memcpy(n_ui->name, name, strlen(name));
n_ui->born = born;
n_ui->uid = uid;
n_ui->gid = gid;
n_ui->last_mod = born;
// start without loyalty
n_ui->last_loyal = 0;
n_ui->loyal = 0;
n_ui->first_run = uwsgi_now();
n_ui->last_run = n_ui->first_run;
if (socketpair(AF_UNIX, SOCK_STREAM, 0, n_ui->pipe)) {
uwsgi_error("socketpair()");
goto clear;
}
event_queue_add_fd_read(uwsgi.emperor_queue, n_ui->pipe[0]);
if (n_ui->use_config) {
if (socketpair(AF_UNIX, SOCK_STREAM, 0, n_ui->pipe_config)) {
uwsgi_error("socketpair()");
goto clear;
}
}
// TODO pre-start hook
// a new uWSGI instance will start
pid = fork();
if (pid < 0) {
uwsgi_error("fork()")
}
else if (pid > 0) {
n_ui->pid = pid;
// close the right side of the pipe
close(n_ui->pipe[1]);
if (n_ui->use_config) {
close(n_ui->pipe_config[1]);
}
if (n_ui->use_config) {
if (write(n_ui->pipe_config[0], n_ui->config, n_ui->config_len) <= 0) {
uwsgi_error("write()");
}
close(n_ui->pipe_config[0]);
}
return;
}
else {
if (uwsgi.emperor_tyrant) {
uwsgi_log("[emperor-tyrant] dropping privileges to %d %d for instance %s\n", (int) uid, (int) gid, name);
if (setgid(gid)) {
uwsgi_error("setgid()");
exit(1);
}
if (setgroups(0, NULL)) {
uwsgi_error("setgroups()");
exit(1);
}
if (setuid(uid)) {
uwsgi_error("setuid()");
exit(1);
}
}
unsetenv("UWSGI_RELOADS");
unsetenv("NOTIFY_SOCKET");
uef = uwsgi_num2str(n_ui->pipe[1]);
if (setenv("UWSGI_EMPEROR_FD", uef, 1)) {
uwsgi_error("setenv()");
exit(1);
}
free(uef);
if (n_ui->use_config) {
uef = uwsgi_num2str(n_ui->pipe_config[1]);
if (setenv("UWSGI_EMPEROR_FD_CONFIG", uef, 1)) {
uwsgi_error("setenv()");
exit(1);
}
free(uef);
}
uenvs = environ;
while (*uenvs) {
if (!strncmp(*uenvs, "UWSGI_VASSAL_", 13)) {
char *ne = uwsgi_concat2("UWSGI_", *uenvs + 13);
char *oe = uwsgi_concat2n(*uenvs, strchr(*uenvs, '=') - *uenvs, "", 0);
if (unsetenv(oe)) {
uwsgi_error("unsetenv()");
break;
}
free(oe);
#ifdef UWSGI_DEBUG
uwsgi_log("putenv %s\n", ne);
#endif
if (putenv(ne)) {
uwsgi_error("putenv()");
}
// do not free ne as putenv will add it to the environ
uenvs = environ;
continue;
}
uenvs++;
}
// close the left side of the pipe
close(n_ui->pipe[0]);
if (n_ui->use_config) {
close(n_ui->pipe_config[0]);
}
counter = 4;
struct uwsgi_string_list *uct = uwsgi.vassals_templates;
while (uct) {
counter += 2;
uct = uct->next;
}
vassal_argv = uwsgi_malloc(sizeof(char *) * counter);
// set args
vassal_argv[0] = uwsgi.binary_path;
if (uwsgi.emperor_broodlord) {
colon = strchr(name, ':');
if (colon) {
colon[0] = 0;
}
}
// initialize to a default value
vassal_argv[1] = "--inherit";
if (!strcmp(name + (strlen(name) - 4), ".xml"))
vassal_argv[1] = "--xml";
if (!strcmp(name + (strlen(name) - 4), ".ini"))
vassal_argv[1] = "--ini";
if (!strcmp(name + (strlen(name) - 4), ".yml"))
vassal_argv[1] = "--yaml";
if (!strcmp(name + (strlen(name) - 5), ".yaml"))
vassal_argv[1] = "--yaml";
if (!strcmp(name + (strlen(name) - 3), ".js"))
vassal_argv[1] = "--json";
if (!strcmp(name + (strlen(name) - 5), ".json"))
vassal_argv[1] = "--json";
if (colon) {
colon[0] = ':';
}
vassal_argv[2] = name;
if (uwsgi.emperor_magic_exec) {
if (!access(name, R_OK | X_OK)) {
vassal_argv[2] = uwsgi_concat2("exec://", name);
}
}
if (n_ui->use_config) {
vassal_argv[2] = uwsgi_concat2("emperor://", name);
}
counter = 3;
uct = uwsgi.vassals_templates;
while (uct) {
vassal_argv[counter] = "--inherit";
vassal_argv[counter + 1] = uct->value;
counter += 2;
uct = uct->next;
}
vassal_argv[counter] = NULL;
// disable stdin
int stdin_fd = open("/dev/null", O_RDONLY);
if (stdin_fd < 0) {
uwsgi_error_open("/dev/null");
exit(1);
}
if (stdin_fd != 0) {
if (dup2(stdin_fd, 0)) {
uwsgi_error("dup2()");
exit(1);
}
close(stdin_fd);
}
// close all of the unneded fd
for (i = 3; i < (int) uwsgi.max_fd; i++) {
if (n_ui->use_config) {
if (i == n_ui->pipe_config[1])
continue;
}
if (i != n_ui->pipe[1]) {
close(i);
}
}
if (uwsgi.vassals_start_hook) {
uwsgi_log("[emperor] running vassal start-hook: %s %s\n", uwsgi.vassals_start_hook, n_ui->name);
if (uwsgi.emperor_absolute_dir) {
if (setenv("UWSGI_VASSALS_DIR", uwsgi.emperor_absolute_dir, 1)) {
uwsgi_error("setenv()");
}
}
int start_hook_ret = uwsgi_run_command_and_wait(uwsgi.vassals_start_hook, n_ui->name);
uwsgi_log("[emperor] %s start-hook returned %d\n", n_ui->name, start_hook_ret);
}
// start !!!
if (execvp(vassal_argv[0], vassal_argv)) {
uwsgi_error("execvp()");
}
uwsgi_log("[emperor] is the uwsgi binary in your system PATH ?\n");
// never here
exit(UWSGI_EXILE_CODE);
}
clear:
free(n_ui);
c_ui->ui_next = NULL;
}
void uwsgi_check_logrotate(void) {
char message[1024];
int need_rotation = 0;
int need_reopen = 0;
if (uwsgi.log_master) {
uwsgi.shared->logsize = lseek(uwsgi.original_log_fd, 0, SEEK_CUR);
}
else {
uwsgi.shared->logsize = lseek(2, 0, SEEK_CUR);
}
if (uwsgi.log_maxsize > 0 && uwsgi.shared->logsize > uwsgi.log_maxsize) {
need_rotation = 1;
}
if (uwsgi_check_touches(uwsgi.touch_logrotate)) {
need_rotation = 1;
}
if (uwsgi_check_touches(uwsgi.touch_logreopen)) {
need_reopen = 1;
}
if (need_rotation) {
char *rot_name = uwsgi.log_backupname;
int need_free = 0;
if (rot_name == NULL) {
char *ts_str = uwsgi_num2str((int) uwsgi_now());
rot_name = uwsgi_concat3(uwsgi.logfile, ".", ts_str);
free(ts_str);
need_free = 1;
}
int ret = snprintf(message, 1024, "[%d] logsize: %llu, triggering rotation to %s...\n", (int) uwsgi_now(), (unsigned long long) uwsgi.shared->logsize, rot_name);
if (ret > 0) {
if (write(uwsgi.original_log_fd, message, ret) != ret) {
// very probably this will never be printed
uwsgi_error("write()");
}
}
if (rename(uwsgi.logfile, rot_name) == 0) {
// reopen logfile dup'it and eventually gracefully reload workers;
int fd = open(uwsgi.logfile, O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR | S_IRGRP);
if (fd < 0) {
uwsgi_error_open(uwsgi.logfile);
grace_them_all(0);
}
if (dup2(fd, uwsgi.original_log_fd) < 0) {
uwsgi_error("dup2()");
grace_them_all(0);
}
close(fd);
}
else {
uwsgi_error("unable to rotate log: rename()");
}
if (need_free)
free(rot_name);
}
else if (need_reopen) {
int ret = snprintf(message, 1024, "[%d] logsize: %llu, triggering log-reopen...\n", (int) uwsgi_now(), (unsigned long long) uwsgi.shared->logsize);
if (ret > 0) {
if (write(uwsgi.original_log_fd, message, ret) != ret) {
// very probably this will never be printed
uwsgi_error("write()");
}
}
// reopen logfile;
close(uwsgi.original_log_fd);
uwsgi.original_log_fd = open(uwsgi.logfile, O_RDWR | O_CREAT | O_APPEND, S_IRUSR | S_IWUSR | S_IRGRP);
if (uwsgi.original_log_fd < 0) {
uwsgi_error_open(uwsgi.logfile);
grace_them_all(0);
}
ret = snprintf(message, 1024, "[%d] %s reopened.\n", (int) uwsgi_now(), uwsgi.logfile);
if (ret > 0) {
if (write(uwsgi.original_log_fd, message, ret) != ret) {
// very probably this will never be printed
uwsgi_error("write()");
}
}
uwsgi.shared->logsize = lseek(uwsgi.original_log_fd, 0, SEEK_CUR);
}
}
PyObject *uwsgi_pyimport_by_filename(char *name, char *filename) {
#ifdef UWSGI_PYPY
uwsgi_log("import by filename is currently not supported on PyPy !!!\n");
return NULL;
#else
FILE *pyfile;
struct _node *py_file_node = NULL;
PyObject *py_compiled_node, *py_file_module;
int is_a_package = 0;
struct stat pystat;
char *real_filename = filename;
if (!uwsgi_check_scheme(filename)) {
pyfile = fopen(filename, "r");
if (!pyfile) {
uwsgi_log("failed to open python file %s\n", filename);
return NULL;
}
if (fstat(fileno(pyfile), &pystat)) {
uwsgi_error("fstat()");
return NULL;
}
if (S_ISDIR(pystat.st_mode)) {
is_a_package = 1;
fclose(pyfile);
real_filename = uwsgi_concat2(filename, "/__init__.py");
pyfile = fopen(real_filename, "r");
if (!pyfile) {
uwsgi_error_open(real_filename);
free(real_filename);
return NULL;
}
}
py_file_node = PyParser_SimpleParseFile(pyfile, real_filename, Py_file_input);
if (!py_file_node) {
PyErr_Print();
uwsgi_log("failed to parse file %s\n", real_filename);
if (is_a_package)
free(real_filename);
fclose(pyfile);
return NULL;
}
fclose(pyfile);
}
else {
int pycontent_size = 0;
char *pycontent = uwsgi_open_and_read(filename, &pycontent_size, 1, NULL);
if (pycontent) {
py_file_node = PyParser_SimpleParseString(pycontent, Py_file_input);
if (!py_file_node) {
PyErr_Print();
uwsgi_log("failed to parse url %s\n", real_filename);
return NULL;
}
}
}
py_compiled_node = (PyObject *) PyNode_Compile(py_file_node, real_filename);
if (!py_compiled_node) {
PyErr_Print();
uwsgi_log("failed to compile python file %s\n", real_filename);
return NULL;
}
if (is_a_package) {
py_file_module = PyImport_AddModule(name);
if (py_file_module) {
PyModule_AddObject(py_file_module, "__path__", Py_BuildValue("[O]", PyString_FromString(filename)));
}
free(real_filename);
}
py_file_module = PyImport_ExecCodeModule(name, py_compiled_node);
if (!py_file_module) {
PyErr_Print();
return NULL;
}
Py_DECREF(py_compiled_node);
return py_file_module;
#endif
}
// create the logpipe
void create_logpipe(void) {
#if defined(SOCK_SEQPACKET) && defined(__linux__)
if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, uwsgi.shared->worker_log_pipe)) {
#else
if (socketpair(AF_UNIX, SOCK_DGRAM, 0, uwsgi.shared->worker_log_pipe)) {
#endif
uwsgi_error("socketpair()\n");
exit(1);
}
uwsgi_socket_nb(uwsgi.shared->worker_log_pipe[0]);
uwsgi_socket_nb(uwsgi.shared->worker_log_pipe[1]);
if (uwsgi.shared->worker_log_pipe[1] != 1) {
if (dup2(uwsgi.shared->worker_log_pipe[1], 1) < 0) {
uwsgi_error("dup2()");
exit(1);
}
}
if (dup2(1, 2) < 0) {
uwsgi_error("dup2()");
exit(1);
}
}
#ifdef UWSGI_ZEROMQ
// the zeromq logger
ssize_t uwsgi_zeromq_logger(struct uwsgi_logger *ul, char *message, size_t len) {
if (!ul->configured) {
if (!ul->arg) {
uwsgi_log_safe("invalid zeromq syntax\n");
exit(1);
}
void *ctx = uwsgi_zeromq_init();
ul->data = zmq_socket(ctx, ZMQ_PUSH);
if (ul->data == NULL) {
uwsgi_error_safe("zmq_socket()");
exit(1);
}
if (zmq_connect(ul->data, ul->arg) < 0) {
uwsgi_error_safe("zmq_connect()");
exit(1);
}
ul->configured = 1;
}
zmq_msg_t msg;
if (zmq_msg_init_size(&msg, len) == 0) {
memcpy(zmq_msg_data(&msg), message, len);
#if ZMQ_VERSION >= ZMQ_MAKE_VERSION(3,0,0)
zmq_sendmsg(ul->data, &msg, 0);
#else
zmq_send(ul->data, &msg, 0);
#endif
zmq_msg_close(&msg);
}
return 0;
}
#endif
// log to the specified file or udp address
void logto(char *logfile) {
int fd;
#ifdef UWSGI_UDP
char *udp_port;
struct sockaddr_in udp_addr;
udp_port = strchr(logfile, ':');
if (udp_port) {
udp_port[0] = 0;
if (!udp_port[1] || !logfile[0]) {
uwsgi_log("invalid udp address\n");
exit(1);
}
fd = socket(AF_INET, SOCK_DGRAM, 0);
if (fd < 0) {
uwsgi_error("socket()");
exit(1);
}
memset(&udp_addr, 0, sizeof(struct sockaddr_in));
udp_addr.sin_family = AF_INET;
udp_addr.sin_port = htons(atoi(udp_port + 1));
char *resolved = uwsgi_resolve_ip(logfile);
if (resolved) {
udp_addr.sin_addr.s_addr = inet_addr(resolved);
}
else {
udp_addr.sin_addr.s_addr = inet_addr(logfile);
}
if (connect(fd, (const struct sockaddr *) &udp_addr, sizeof(struct sockaddr_in)) < 0) {
uwsgi_error("connect()");
exit(1);
}
}
else {
#endif
if (uwsgi.log_truncate) {
fd = open(logfile, O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR | S_IRGRP);
}
else {
fd = open(logfile, O_RDWR | O_CREAT | O_APPEND, S_IRUSR | S_IWUSR | S_IRGRP);
}
if (fd < 0) {
uwsgi_error_open(logfile);
exit(1);
}
uwsgi.logfile = logfile;
if (uwsgi.chmod_logfile_value) {
if (chmod(uwsgi.logfile, uwsgi.chmod_logfile_value)) {
uwsgi_error("chmod()");
}
}
#ifdef UWSGI_UDP
}
#endif
/* stdout */
if (fd != 1) {
if (dup2(fd, 1) < 0) {
uwsgi_error("dup2()");
exit(1);
}
close(fd);
}
/* stderr */
if (dup2(1, 2) < 0) {
uwsgi_error("dup2()");
exit(1);
}
}