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ceebaa7d9d8bf8f79ea1b223a36f75e44adda233
uwsgi/core/utils.c
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Roberto De Ioris ceebaa7d9d fixed indentation
2012-11-09 12:16:39 +01:00

5039 lines
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#include "uwsgi.h"
extern struct uwsgi_server uwsgi;
extern char **environ;
/* statistically ordered */
struct http_status_codes hsc[] = {
{"200", "OK"},
{"302", "Found"},
{"404", "Not Found"},
{"500", "Internal Server Error"},
{"301", "Moved Permanently"},
{"304", "Not Modified"},
{"303", "See Other"},
{"403", "Forbidden"},
{"307", "Temporary Redirect"},
{"401", "Unauthorized"},
{"400", "Bad Request"},
{"405", "Method Not Allowed"},
{"408", "Request Timeout"},
{"100", "Continue"},
{"101", "Switching Protocols"},
{"201", "Created"},
{"202", "Accepted"},
{"203", "Non-Authoritative Information"},
{"204", "No Content"},
{"205", "Reset Content"},
{"206", "Partial Content"},
{"300", "Multiple Choices"},
{"305", "Use Proxy"},
{"402", "Payment Required"},
{"406", "Not Acceptable"},
{"407", "Proxy Authentication Required"},
{"409", "Conflict"},
{"410", "Gone"},
{"411", "Length Required"},
{"412", "Precondition Failed"},
{"413", "Request Entity Too Large"},
{"414", "Request-URI Too Long"},
{"415", "Unsupported Media Type"},
{"416", "Requested Range Not Satisfiable"},
{"417", "Expectation Failed"},
{"501", "Not Implemented"},
{"502", "Bad Gateway"},
{"503", "Service Unavailable"},
{"504", "Gateway Timeout"},
{"505", "HTTP Version Not Supported"},
{"", NULL},
};
#ifdef __BIG_ENDIAN__
uint16_t uwsgi_swap16(uint16_t x) {
return (uint16_t) ((x & 0xff) << 8 | (x & 0xff00) >> 8);
}
uint32_t uwsgi_swap32(uint32_t x) {
x = ((x << 8) & 0xFF00FF00) | ((x >> 8) & 0x00FF00FF);
return (x >> 16) | (x << 16);
}
// thanks to ffmpeg project for this idea :P
uint64_t uwsgi_swap64(uint64_t x) {
union {
uint64_t ll;
uint32_t l[2];
} w, r;
w.ll = x;
r.l[0] = uwsgi_swap32(w.l[1]);
r.l[1] = uwsgi_swap32(w.l[0]);
return r.ll;
}
#endif
// check if a string is a valid hex number
int check_hex(char *str, int len) {
int i;
for (i = 0; i < len; i++) {
if ((str[i] < '0' && str[i] > '9') && (str[i] < 'a' && str[i] > 'f') && (str[i] < 'A' && str[i] > 'F')
) {
return 0;
}
}
return 1;
}
// increase worker harakiri
void inc_harakiri(int sec) {
if (uwsgi.master_process) {
uwsgi.workers[uwsgi.mywid].harakiri += sec;
}
else {
alarm(uwsgi.shared->options[UWSGI_OPTION_HARAKIRI] + sec);
}
}
// set worker harakiri
void set_harakiri(int sec) {
if (sec == 0) {
uwsgi.workers[uwsgi.mywid].harakiri = 0;
}
else {
uwsgi.workers[uwsgi.mywid].harakiri = uwsgi_now() + sec;
}
if (!uwsgi.master_process) {
alarm(sec);
}
}
// set user harakiri
void set_user_harakiri(int sec) {
if (!uwsgi.master_process) {
uwsgi_log("!!! unable to set user harakiri without the master process !!!\n");
return;
}
if (sec == 0) {
uwsgi.workers[uwsgi.mywid].user_harakiri = 0;
}
else {
uwsgi.workers[uwsgi.mywid].user_harakiri = uwsgi_now() + sec;
}
}
// set mule harakiri
void set_mule_harakiri(int sec) {
if (sec == 0) {
uwsgi.mules[uwsgi.muleid - 1].harakiri = 0;
}
else {
uwsgi.mules[uwsgi.muleid - 1].harakiri = uwsgi_now() + sec;
}
if (!uwsgi.master_process) {
alarm(sec);
}
}
#ifdef UWSGI_SPOOLER
// set spooler harakiri
void set_spooler_harakiri(int sec) {
if (sec == 0) {
uwsgi.i_am_a_spooler->harakiri = 0;
}
else {
uwsgi.i_am_a_spooler->harakiri = uwsgi_now() + sec;
}
if (!uwsgi.master_process) {
alarm(sec);
}
}
#endif
// daemonize to the specified logfile
void daemonize(char *logfile) {
pid_t pid;
int fdin;
// do not daemonize under emperor
if (uwsgi.has_emperor) {
logto(logfile);
return;
}
pid = fork();
if (pid < 0) {
uwsgi_error("fork()");
exit(1);
}
if (pid != 0) {
_exit(0);
}
if (setsid() < 0) {
uwsgi_error("setsid()");
exit(1);
}
/* refork... */
pid = fork();
if (pid < 0) {
uwsgi_error("fork()");
exit(1);
}
if (pid != 0) {
_exit(0);
}
if (!uwsgi.do_not_change_umask) {
umask(0);
}
/*if (chdir("/") != 0) {
uwsgi_error("chdir()");
exit(1);
} */
fdin = open("/dev/null", O_RDWR);
if (fdin < 0) {
uwsgi_error_open("/dev/null");
exit(1);
}
/* stdin */
if (fdin != 0) {
if (dup2(fdin, 0) < 0) {
uwsgi_error("dup2()");
exit(1);
}
close(fdin);
}
logto(logfile);
}
// get current working directory
char *uwsgi_get_cwd() {
// set this to static to avoid useless reallocations in stats mode
static size_t newsize = 256;
char *cwd = uwsgi_malloc(newsize);
if (getcwd(cwd, newsize) == NULL && errno == ERANGE) {
newsize += 256;
uwsgi_log("need a bigger buffer (%d bytes) for getcwd(). doing reallocation.\n", newsize);
free(cwd);
cwd = uwsgi_malloc(newsize);
if (getcwd(cwd, newsize) == NULL) {
uwsgi_error("getcwd()");
exit(1);
}
}
return cwd;
}
// generate internal server error message
void internal_server_error(struct wsgi_request *wsgi_req, char *message) {
if (uwsgi.wsgi_req->headers_size == 0) {
if (uwsgi.shared->options[UWSGI_OPTION_CGI_MODE] == 0) {
uwsgi.wsgi_req->headers_size = wsgi_req->socket->proto_write_header(wsgi_req, "HTTP/1.1 500 Internal Server Error\r\nContent-type: text/html\r\n\r\n", 63);
}
else {
uwsgi.wsgi_req->headers_size = wsgi_req->socket->proto_write_header(wsgi_req, "Status: 500 Internal Server Error\r\nContent-type: text/html\r\n\r\n", 62);
}
uwsgi.wsgi_req->header_cnt = 2;
}
uwsgi.wsgi_req->response_size = wsgi_req->socket->proto_write(wsgi_req, "<h1>uWSGI Error</h1>", 20);
uwsgi.wsgi_req->response_size += wsgi_req->socket->proto_write(wsgi_req, message, strlen(message));
}
// check if a string_list containes an item
struct uwsgi_string_list *uwsgi_string_list_has_item(struct uwsgi_string_list *list, char *key, size_t keylen) {
struct uwsgi_string_list *usl = list;
while (usl) {
if (keylen == usl->len) {
if (!memcmp(key, usl->value, keylen)) {
return usl;
}
}
usl = usl->next;
}
return NULL;
}
#ifdef __linux__
void uwsgi_set_cgroup() {
char *cgroup_taskfile;
FILE *cgroup;
char *cgroup_opt;
struct uwsgi_string_list *usl, *uslo;
if (!uwsgi.cgroup)
return;
usl = uwsgi.cgroup;
while (usl) {
if (mkdir(usl->value, 0700)) {
uwsgi_log("using Linux cgroup %s\n", usl->value);
if (errno != EEXIST) {
uwsgi_error("mkdir()");
}
}
else {
uwsgi_log("created Linux cgroup %s\n", usl->value);
}
cgroup_taskfile = uwsgi_concat2(usl->value, "/tasks");
cgroup = fopen(cgroup_taskfile, "w");
if (!cgroup) {
uwsgi_error_open(cgroup_taskfile);
exit(1);
}
if (fprintf(cgroup, "%d", (int) getpid()) <= 0) {
uwsgi_log("could not set cgroup\n");
exit(1);
}
uwsgi_log("assigned process %d to cgroup %s\n", (int) getpid(), cgroup_taskfile);
fclose(cgroup);
free(cgroup_taskfile);
uslo = uwsgi.cgroup_opt;
while (uslo) {
cgroup_opt = strchr(uslo->value, '=');
if (!cgroup_opt) {
cgroup_opt = strchr(uslo->value, ':');
if (!cgroup_opt) {
uwsgi_log("invalid cgroup-opt syntax\n");
exit(1);
}
}
cgroup_opt[0] = 0;
cgroup_opt++;
cgroup_taskfile = uwsgi_concat3(usl->value, "/", uslo->value);
cgroup = fopen(cgroup_taskfile, "w");
if (cgroup) {
if (fprintf(cgroup, "%s\n", cgroup_opt) < 0) {
uwsgi_log("could not set cgroup option %s to %s\n", uslo->value, cgroup_opt);
exit(1);
}
fclose(cgroup);
uwsgi_log("set %s to %s\n", cgroup_opt, cgroup_taskfile);
}
free(cgroup_taskfile);
cgroup_opt[-1] = '=';
uslo = uslo->next;
}
usl = usl->next;
}
}
#endif
// drop privileges (as root)
void uwsgi_as_root() {
if (!getuid()) {
if (!uwsgi.master_as_root && !uwsgi.uidname) {
uwsgi_log_initial("uWSGI running as root, you can use --uid/--gid/--chroot options\n");
}
#ifdef UWSGI_CAP
if (uwsgi.cap && uwsgi.cap_count > 0 && !uwsgi.reloads) {
cap_value_t minimal_cap_values[] = { CAP_SYS_CHROOT, CAP_SETUID, CAP_SETGID, CAP_SETPCAP };
cap_t caps = cap_init();
if (!caps) {
uwsgi_error("cap_init()");
exit(1);
}
cap_clear(caps);
cap_set_flag(caps, CAP_EFFECTIVE, 4, minimal_cap_values, CAP_SET);
cap_set_flag(caps, CAP_PERMITTED, 4, minimal_cap_values, CAP_SET);
cap_set_flag(caps, CAP_PERMITTED, uwsgi.cap_count, uwsgi.cap, CAP_SET);
cap_set_flag(caps, CAP_INHERITABLE, uwsgi.cap_count, uwsgi.cap, CAP_SET);
if (cap_set_proc(caps) < 0) {
uwsgi_error("cap_set_proc()");
exit(1);
}
cap_free(caps);
#ifdef __linux__
if (prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0) < 0) {
uwsgi_error("prctl()");
exit(1);
}
#endif
}
#endif
#if defined(__linux__) && !defined(OBSOLETE_LINUX_KERNEL)
if (uwsgi.unshare && !uwsgi.reloads) {
if (unshare(uwsgi.unshare)) {
uwsgi_error("unshare()");
exit(1);
}
else {
uwsgi_log("[linux-namespace] applied unshare() mask: %d\n", uwsgi.unshare);
}
}
#endif
if (uwsgi.chroot && !uwsgi.reloads) {
if (!uwsgi.master_as_root)
uwsgi_log("chroot() to %s\n", uwsgi.chroot);
if (chroot(uwsgi.chroot)) {
uwsgi_error("chroot()");
exit(1);
}
#ifdef __linux__
if (uwsgi.shared->options[UWSGI_OPTION_MEMORY_DEBUG]) {
uwsgi_log("*** Warning, on linux system you have to bind-mount the /proc fs in your chroot to get memory debug/report.\n");
}
#endif
}
// now run the scripts needed by root
struct uwsgi_string_list *usl = uwsgi.exec_as_root;
while (usl) {
uwsgi_log("running \"%s\" (as root)...\n", usl->value);
int ret = uwsgi_run_command_and_wait(NULL, usl->value);
if (ret != 0) {
uwsgi_log("command \"%s\" exited with non-zero code: %d\n", usl->value, ret);
exit(1);
}
usl = usl->next;
}
if (uwsgi.gidname) {
struct group *ugroup = getgrnam(uwsgi.gidname);
if (ugroup) {
uwsgi.gid = ugroup->gr_gid;
}
else {
uwsgi_log("group %s not found.\n", uwsgi.gidname);
exit(1);
}
}
if (uwsgi.uidname) {
struct passwd *upasswd = getpwnam(uwsgi.uidname);
if (upasswd) {
uwsgi.uid = upasswd->pw_uid;
}
else {
uwsgi_log("user %s not found.\n", uwsgi.uidname);
exit(1);
}
}
if (uwsgi.logfile_chown) {
if (fchown(2, uwsgi.uid, uwsgi.gid)) {
uwsgi_error("fchown()");
exit(1);
}
}
// fix ipcsem owner
if (uwsgi.lock_ops.lock_init == uwsgi_lock_ipcsem_init) {
struct uwsgi_lock_item *uli = uwsgi.registered_locks;
while (uli) {
union semun {
int val;
struct semid_ds *buf;
ushort *array;
} semu;
struct semid_ds sds;
memset(&sds, 0, sizeof(sds));
semu.buf = &sds;
int semid = 0;
memcpy(&semid, uli->lock_ptr, sizeof(int));
if (semctl(semid, 0, IPC_STAT, semu)) {
uwsgi_error("semctl()");
exit(1);
}
semu.buf->sem_perm.uid = uwsgi.uid;
semu.buf->sem_perm.gid = uwsgi.gid;
if (semctl(semid, 0, IPC_SET, semu)) {
uwsgi_error("semctl()");
exit(1);
}
uli = uli->next;
}
}
// ok try to call some special hook before finally dropping privileges
int i;
for (i = 0; i < uwsgi.gp_cnt; i++) {
if (uwsgi.gp[i]->before_privileges_drop) {
uwsgi.gp[i]->before_privileges_drop();
}
}
if (uwsgi.gid) {
if (!uwsgi.master_as_root)
uwsgi_log("setgid() to %d\n", uwsgi.gid);
if (setgid(uwsgi.gid)) {
uwsgi_error("setgid()");
exit(1);
}
if (uwsgi.no_initgroups || !uwsgi.uid) {
if (setgroups(0, NULL)) {
uwsgi_error("setgroups()");
exit(1);
}
}
else {
char *uidname = uwsgi.uidname;
if (!uidname) {
struct passwd *pw = getpwuid(uwsgi.uid);
if (pw)
uidname = pw->pw_name;
}
if (!uidname)
uidname = uwsgi_num2str(uwsgi.uid);
if (initgroups(uidname, uwsgi.gid)) {
uwsgi_error("setgroups()");
exit(1);
}
}
int additional_groups = getgroups(0, NULL);
gid_t *gids = uwsgi_calloc(sizeof(gid_t) * additional_groups);
int i;
if (getgroups(additional_groups, gids) > 0) {
for (i = 0; i < additional_groups; i++) {
if (gids[i] == uwsgi.gid)
continue;
struct group *gr = getgrgid(gids[i]);
if (gr) {
uwsgi_log("set additional group %d (%s)\n", gids[i], gr->gr_name);
}
else {
uwsgi_log("set additional group %d\n", gids[i]);
}
}
}
}
if (uwsgi.uid) {
if (!uwsgi.master_as_root)
uwsgi_log("setuid() to %d\n", uwsgi.uid);
if (setuid(uwsgi.uid)) {
uwsgi_error("setuid()");
exit(1);
}
}
if (!getuid()) {
uwsgi_log_initial("*** WARNING: you are running uWSGI as root !!! (use the --uid flag) *** \n");
}
#ifdef UWSGI_CAP
if (uwsgi.cap && uwsgi.cap_count > 0 && !uwsgi.reloads) {
cap_t caps = cap_init();
if (!caps) {
uwsgi_error("cap_init()");
exit(1);
}
cap_clear(caps);
cap_set_flag(caps, CAP_EFFECTIVE, uwsgi.cap_count, uwsgi.cap, CAP_SET);
cap_set_flag(caps, CAP_PERMITTED, uwsgi.cap_count, uwsgi.cap, CAP_SET);
cap_set_flag(caps, CAP_INHERITABLE, uwsgi.cap_count, uwsgi.cap, CAP_SET);
if (cap_set_proc(caps) < 0) {
uwsgi_error("cap_set_proc()");
exit(1);
}
cap_free(caps);
}
#endif
// now run the scripts needed by the user
usl = uwsgi.exec_as_user;
while (usl) {
uwsgi_log("running \"%s\" (as uid: %d gid: %d) ...\n", usl->value, (int) getuid(), (int) getgid());
int ret = uwsgi_run_command_and_wait(NULL, usl->value);
if (ret != 0) {
uwsgi_log("command \"%s\" exited with non-zero code: %d\n", usl->value, ret);
exit(1);
}
usl = usl->next;
}
// we could now patch the binary
if (uwsgi.unprivileged_binary_patch) {
uwsgi.argv[0] = uwsgi.unprivileged_binary_patch;
execvp(uwsgi.unprivileged_binary_patch, uwsgi.argv);
uwsgi_error("execvp()");
exit(1);
}
if (uwsgi.unprivileged_binary_patch_arg) {
uwsgi_exec_command_with_args(uwsgi.unprivileged_binary_patch_arg);
}
}
else {
if (uwsgi.chroot && !uwsgi.is_a_reload) {
uwsgi_log("cannot chroot() as non-root user\n");
exit(1);
}
if (uwsgi.gid && getgid() != uwsgi.gid) {
uwsgi_log("cannot setgid() as non-root user\n");
exit(1);
}
if (uwsgi.uid && getuid() != uwsgi.uid) {
uwsgi_log("cannot setuid() as non-root user\n");
exit(1);
}
}
}
// destroy a request
void uwsgi_destroy_request(struct wsgi_request *wsgi_req) {
wsgi_req->socket->proto_close(wsgi_req);
#ifdef UWSGI_THREADING
int foo;
if (uwsgi.threads > 1) {
// now the thread can die...
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &foo);
}
#endif
memset(wsgi_req, 0, sizeof(struct wsgi_request));
}
// finalize/close/free a request
void uwsgi_close_request(struct wsgi_request *wsgi_req) {
int waitpid_status;
int tmp_id;
uint64_t tmp_rt, rss = 0, vsz = 0;
wsgi_req->end_of_request = uwsgi_micros();
tmp_rt = wsgi_req->end_of_request - wsgi_req->start_of_request;
uwsgi.workers[uwsgi.mywid].running_time += tmp_rt;
uwsgi.workers[uwsgi.mywid].avg_response_time = (uwsgi.workers[uwsgi.mywid].avg_response_time + tmp_rt) / 2;
// get memory usage
if (uwsgi.shared->options[UWSGI_OPTION_MEMORY_DEBUG] == 1 || uwsgi.force_get_memusage) {
get_memusage(&rss, &vsz);
uwsgi.workers[uwsgi.mywid].vsz_size = vsz;
uwsgi.workers[uwsgi.mywid].rss_size = rss;
}
// close the connection with the webserver
if (!wsgi_req->fd_closed || wsgi_req->body_as_file) {
// NOTE, if we close the socket before receiving eventually sent data, socket layer will send a RST
wsgi_req->socket->proto_close(wsgi_req);
}
uwsgi.workers[0].requests++;
uwsgi.workers[uwsgi.mywid].requests++;
uwsgi.workers[uwsgi.mywid].cores[wsgi_req->async_id].requests++;
// this is used for MAX_REQUESTS
uwsgi.workers[uwsgi.mywid].delta_requests++;
// after_request hook
if (uwsgi.p[wsgi_req->uh.modifier1]->after_request)
uwsgi.p[wsgi_req->uh.modifier1]->after_request(wsgi_req);
#ifdef UWSGI_THREADING
if (uwsgi.threads > 1) {
// now the thread can die...
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &tmp_id);
}
#endif
// leave harakiri mode
if (uwsgi.workers[uwsgi.mywid].harakiri > 0) {
set_harakiri(0);
}
// leave user harakiri mode
if (uwsgi.workers[uwsgi.mywid].user_harakiri > 0) {
set_user_harakiri(0);
}
// this is racy in multithread mode
if (wsgi_req->response_size > 0) {
uwsgi.workers[uwsgi.mywid].tx += wsgi_req->response_size;
}
if (wsgi_req->headers_size > 0) {
uwsgi.workers[uwsgi.mywid].tx += wsgi_req->headers_size;
}
// defunct process reaper
if (uwsgi.shared->options[UWSGI_OPTION_REAPER] == 1 || uwsgi.grunt) {
while (waitpid(WAIT_ANY, &waitpid_status, WNOHANG) > 0);
}
// free logvars
struct uwsgi_logvar *lv = wsgi_req->logvars;
while (lv) {
struct uwsgi_logvar *ptr = lv;
lv = lv->next;
free(ptr);
}
// reset request
tmp_id = wsgi_req->async_id;
memset(wsgi_req, 0, sizeof(struct wsgi_request));
wsgi_req->async_id = tmp_id;
if (uwsgi.shared->options[UWSGI_OPTION_MAX_REQUESTS] > 0 && uwsgi.workers[uwsgi.mywid].delta_requests >= uwsgi.shared->options[UWSGI_OPTION_MAX_REQUESTS]) {
goodbye_cruel_world();
}
if (uwsgi.reload_on_as && (rlim_t) vsz >= uwsgi.reload_on_as) {
goodbye_cruel_world();
}
if (uwsgi.reload_on_rss && (rlim_t) rss >= uwsgi.reload_on_rss) {
goodbye_cruel_world();
}
// ready to accept request, if i am a vassal signal Emperor about my loyalty
if (uwsgi.has_emperor && !uwsgi.loyal) {
uwsgi_log("announcing my loyalty to the Emperor...\n");
char byte = 17;
if (write(uwsgi.emperor_fd, &byte, 1) != 1) {
uwsgi_error("write()");
}
uwsgi.loyal = 1;
}
#ifdef __linux__
#ifdef MADV_MERGEABLE
// run the ksm mapper
if (uwsgi.linux_ksm > 0 && (uwsgi.workers[uwsgi.mywid].requests % uwsgi.linux_ksm) == 0) {
uwsgi_linux_ksm_map();
}
#endif
#endif
}
#ifdef __linux__
#ifdef MADV_MERGEABLE
void uwsgi_linux_ksm_map(void) {
int dirty = 0;
size_t i;
unsigned long long start = 0, end = 0;
int errors = 0;
int lines = 0;
int fd = open("/proc/self/maps", O_RDONLY);
if (fd < 0) {
uwsgi_error_open("[uwsgi-KSM] /proc/self/maps");
return;
}
// allocate memory if not available;
if (uwsgi.ksm_mappings_current == NULL) {
if (!uwsgi.ksm_buffer_size)
uwsgi.ksm_buffer_size = 32768;
uwsgi.ksm_mappings_current = uwsgi_malloc(uwsgi.ksm_buffer_size);
uwsgi.ksm_mappings_current_size = 0;
}
if (uwsgi.ksm_mappings_last == NULL) {
if (!uwsgi.ksm_buffer_size)
uwsgi.ksm_buffer_size = 32768;
uwsgi.ksm_mappings_last = uwsgi_malloc(uwsgi.ksm_buffer_size);
uwsgi.ksm_mappings_last_size = 0;
}
uwsgi.ksm_mappings_current_size = read(fd, uwsgi.ksm_mappings_current, uwsgi.ksm_buffer_size);
close(fd);
if (uwsgi.ksm_mappings_current_size <= 0) {
uwsgi_log("[uwsgi-KSM] unable to read /proc/self/maps data\n");
return;
}
// we now have areas
if (uwsgi.ksm_mappings_last_size == 0 || uwsgi.ksm_mappings_current_size == 0 || uwsgi.ksm_mappings_current_size != uwsgi.ksm_mappings_last_size) {
dirty = 1;
}
else {
if (memcmp(uwsgi.ksm_mappings_current, uwsgi.ksm_mappings_last, uwsgi.ksm_mappings_current_size) != 0) {
dirty = 1;
}
}
// it is dirty, swap addresses and parse it
if (dirty) {
char *tmp = uwsgi.ksm_mappings_last;
uwsgi.ksm_mappings_last = uwsgi.ksm_mappings_current;
uwsgi.ksm_mappings_current = tmp;
size_t tmp_size = uwsgi.ksm_mappings_last_size;
uwsgi.ksm_mappings_last_size = uwsgi.ksm_mappings_current_size;
uwsgi.ksm_mappings_current_size = tmp_size;
// scan each line and call madvise on it
char *ptr = uwsgi.ksm_mappings_last;
for (i = 0; i < uwsgi.ksm_mappings_last_size; i++) {
if (uwsgi.ksm_mappings_last[i] == '\n') {
lines++;
uwsgi.ksm_mappings_last[i] = 0;
if (sscanf(ptr, "%llx-%llx %*s", &start, &end) == 2) {
if (madvise((void *) (long) start, (size_t) (end - start), MADV_MERGEABLE)) {
errors++;
}
}
uwsgi.ksm_mappings_last[i] = '\n';
ptr = uwsgi.ksm_mappings_last + i + 1;
}
}
if (errors >= lines) {
uwsgi_error("[uwsgi-KSM] unable to share pages");
}
}
}
#endif
#endif
#ifdef __linux__
long uwsgi_num_from_file(char *filename) {
char buf[16];
ssize_t len;
int fd = open(filename, O_RDONLY);
if (fd < 0) {
uwsgi_error_open(filename);
return -1L;
}
len = read(fd, buf, sizeof(buf));
if (len == 0) {
uwsgi_log("read error %s\n", filename);
close(fd);
return -1L;
}
close(fd);
return strtol(buf, (char **) NULL, 10);
}
#endif
// setup for a new request
void wsgi_req_setup(struct wsgi_request *wsgi_req, int async_id, struct uwsgi_socket *uwsgi_sock) {
wsgi_req->poll.events = POLLIN;
wsgi_req->app_id = uwsgi.default_app;
wsgi_req->async_id = async_id;
wsgi_req->sendfile_fd = -1;
wsgi_req->hvec = uwsgi.workers[uwsgi.mywid].cores[wsgi_req->async_id].hvec;
wsgi_req->buffer = uwsgi.workers[uwsgi.mywid].cores[wsgi_req->async_id].buffer;
if (uwsgi.post_buffering > 0) {
wsgi_req->post_buffering_buf = uwsgi.workers[uwsgi.mywid].cores[wsgi_req->async_id].post_buf;
}
if (uwsgi_sock) {
wsgi_req->socket = uwsgi_sock;
}
uwsgi.workers[uwsgi.mywid].cores[wsgi_req->async_id].in_request = 0;
uwsgi.workers[uwsgi.mywid].busy = 0;
// now check for suspend request
if (uwsgi.workers[uwsgi.mywid].suspended == 1) {
uwsgi_log_verbose("*** worker %d suspended ***\n", uwsgi.mywid);
cycle:
// wait for some signal (normally SIGTSTP) or 10 seconds (as fallback)
(void) poll(NULL, 0, 10 * 1000);
if (uwsgi.workers[uwsgi.mywid].suspended == 1)
goto cycle;
uwsgi_log_verbose("*** worker %d resumed ***\n", uwsgi.mywid);
}
}
#ifdef UWSGI_ASYNC
int wsgi_req_async_recv(struct wsgi_request *wsgi_req) {
uwsgi.workers[uwsgi.mywid].cores[wsgi_req->async_id].in_request = 1;
uwsgi.workers[uwsgi.mywid].busy = 1;
wsgi_req->start_of_request = uwsgi_micros();
wsgi_req->start_of_request_in_sec = wsgi_req->start_of_request / 1000000;
if (!wsgi_req->do_not_add_to_async_queue) {
if (event_queue_add_fd_read(uwsgi.async_queue, wsgi_req->poll.fd) < 0)
return -1;
async_add_timeout(wsgi_req, uwsgi.shared->options[UWSGI_OPTION_SOCKET_TIMEOUT]);
uwsgi.async_proto_fd_table[wsgi_req->poll.fd] = wsgi_req;
}
// enter harakiri mode
if (uwsgi.shared->options[UWSGI_OPTION_HARAKIRI] > 0) {
set_harakiri(uwsgi.shared->options[UWSGI_OPTION_HARAKIRI]);
}
return 0;
}
#endif
// receive a new request
int wsgi_req_recv(struct wsgi_request *wsgi_req) {
uwsgi.workers[uwsgi.mywid].cores[wsgi_req->async_id].in_request = 1;
uwsgi.workers[uwsgi.mywid].busy = 1;
wsgi_req->start_of_request = uwsgi_micros();
wsgi_req->start_of_request_in_sec = wsgi_req->start_of_request / 1000000;
// edge triggered sockets get the whole request during accept() phase
if (!wsgi_req->socket->edge_trigger) {
if (!uwsgi_parse_packet(wsgi_req, uwsgi.shared->options[UWSGI_OPTION_SOCKET_TIMEOUT])) {
return -1;
}
}
// enter harakiri mode
if (uwsgi.shared->options[UWSGI_OPTION_HARAKIRI] > 0) {
set_harakiri(uwsgi.shared->options[UWSGI_OPTION_HARAKIRI]);
}
#ifdef UWSGI_ROUTING
if (uwsgi_apply_routes(wsgi_req) == UWSGI_ROUTE_BREAK)
return 0;
#endif
wsgi_req->async_status = uwsgi.p[wsgi_req->uh.modifier1]->request(wsgi_req);
return 0;
}
// accept a new request
int wsgi_req_simple_accept(struct wsgi_request *wsgi_req, int fd) {
wsgi_req->poll.fd = wsgi_req->socket->proto_accept(wsgi_req, fd);
if (wsgi_req->poll.fd < 0) {
return -1;
}
// set close on exec (if not a new socket)
if (!wsgi_req->socket->edge_trigger && uwsgi.close_on_exec) {
fcntl(wsgi_req->poll.fd, F_SETFD, FD_CLOEXEC);
}
return 0;
}
// send heartbeat to the emperor
void uwsgi_heartbeat() {
if (!uwsgi.has_emperor)
return;
time_t now = uwsgi_now();
if (uwsgi.next_heartbeat < now) {
char byte = 26;
if (write(uwsgi.emperor_fd, &byte, 1) != 1) {
uwsgi_error("write()");
}
uwsgi.next_heartbeat = now + uwsgi.heartbeat;
}
}
// accept a request
int wsgi_req_accept(int queue, struct wsgi_request *wsgi_req) {
int ret;
int interesting_fd = -1;
struct uwsgi_socket *uwsgi_sock = uwsgi.sockets;
int timeout = -1;
thunder_lock;
// heartbeat
// in multithreaded mode we are now locked
if (uwsgi.has_emperor && uwsgi.heartbeat) {
timeout = uwsgi.heartbeat;
}
// need edge trigger ?
if (uwsgi.is_et) {
while (uwsgi_sock) {
if (uwsgi_sock->retry && uwsgi_sock->retry[wsgi_req->async_id]) {
timeout = 0;
break;
}
uwsgi_sock = uwsgi_sock->next;
}
// reset pointer
uwsgi_sock = uwsgi.sockets;
}
ret = event_queue_wait(queue, timeout, &interesting_fd);
if (ret < 0) {
thunder_unlock;
return -1;
}
// check for heartbeat
if (timeout > 0) {
uwsgi_heartbeat();
// no need to continue if timed-out
if (ret == 0)
return -1;
}
#ifdef UWSGI_THREADING
// kill the thread after the request completion
if (uwsgi.threads > 1)
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &ret);
#endif
if (uwsgi.signal_socket > -1 && (interesting_fd == uwsgi.signal_socket || interesting_fd == uwsgi.my_signal_socket)) {
thunder_unlock;
uwsgi_receive_signal(interesting_fd, "worker", uwsgi.mywid);
#ifdef UWSGI_THREADING
if (uwsgi.threads > 1)
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &ret);
#endif
return -1;
}
while (uwsgi_sock) {
if (interesting_fd == uwsgi_sock->fd || (uwsgi_sock->retry && uwsgi_sock->retry[wsgi_req->async_id]) || (uwsgi_sock->fd_threads && interesting_fd == uwsgi_sock->fd_threads[wsgi_req->async_id])) {
wsgi_req->socket = uwsgi_sock;
wsgi_req->poll.fd = wsgi_req->socket->proto_accept(wsgi_req, interesting_fd);
thunder_unlock;
if (wsgi_req->poll.fd < 0) {
#ifdef UWSGI_THREADING
if (uwsgi.threads > 1)
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &ret);
#endif
return -1;
}
if (!uwsgi_sock->edge_trigger) {
// in Linux, new sockets do not inherit attributes
#ifndef __linux__
/* re-set blocking socket */
int arg = uwsgi_sock->arg;
arg &= (~O_NONBLOCK);
if (fcntl(wsgi_req->poll.fd, F_SETFL, arg) < 0) {
uwsgi_error("fcntl()");
#ifdef UWSGI_THREADING
if (uwsgi.threads > 1)
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &ret);
#endif
return -1;
}
#endif
if (uwsgi.close_on_exec) {
fcntl(wsgi_req->poll.fd, F_SETFD, FD_CLOEXEC);
}
}
return 0;
}
uwsgi_sock = uwsgi_sock->next;
}
thunder_unlock;
#ifdef UWSGI_THREADING
if (uwsgi.threads > 1)
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &ret);
#endif
return -1;
}
// fix related options
void sanitize_args() {
if (uwsgi.async > 1) {
uwsgi.cores = uwsgi.async;
}
if (uwsgi.threads > 1) {
uwsgi.has_threads = 1;
uwsgi.cores = uwsgi.threads;
}
if (uwsgi.shared->options[UWSGI_OPTION_HARAKIRI] > 0) {
if (!uwsgi.post_buffering) {
uwsgi_log(" *** WARNING: you have enabled harakiri without post buffering. Slow upload could be rejected on post-unbuffered webservers *** \n");
}
}
#ifdef UWSGI_HTTP
if (uwsgi.http && !uwsgi.http_only) {
uwsgi.vacuum = 1;
}
#endif
if (uwsgi.write_errors_exception_only) {
uwsgi.ignore_sigpipe = 1;
uwsgi.ignore_write_errors = 1;
}
if (uwsgi.cheaper_count > 0 && uwsgi.cheaper_count >= uwsgi.numproc) {
uwsgi_log("invalid cheaper value: must be lower than processes\n");
exit(1);
}
if (uwsgi.auto_snapshot > 0 && uwsgi.auto_snapshot > uwsgi.numproc) {
uwsgi_log("invalid auto-snapshot value: must be <= than processes\n");
exit(1);
}
}
// translate a OS env to a uWSGI option
void env_to_arg(char *src, char *dst) {
int i;
int val = 0;
for (i = 0; i < (int) strlen(src); i++) {
if (src[i] == '=') {
val = 1;
}
if (val) {
dst[i] = src[i];
}
else {
dst[i] = tolower((int) src[i]);
if (dst[i] == '_') {
dst[i] = '-';
}
}
}
dst[strlen(src)] = 0;
}
// lower a string
char *uwsgi_lower(char *str, size_t size) {
size_t i;
for (i = 0; i < size; i++) {
str[i] = tolower((int) str[i]);
}
return str;
}
// parse OS envs
void parse_sys_envs(char **envs) {
char **uenvs = envs;
char *earg, *eq_pos;
while (*uenvs) {
if (!strncmp(*uenvs, "UWSGI_", 6) && strncmp(*uenvs, "UWSGI_RELOADS=", 14) && strncmp(*uenvs, "UWSGI_ORIGINAL_PROC_NAME=", 25)) {
earg = uwsgi_malloc(strlen(*uenvs + 6) + 1);
env_to_arg(*uenvs + 6, earg);
eq_pos = strchr(earg, '=');
if (!eq_pos) {
break;
}
eq_pos[0] = 0;
add_exported_option(earg, eq_pos + 1, 0);
}
uenvs++;
}
}
// check if a string is contained in another one
char *uwsgi_str_contains(char *str, int slen, char what) {
int i;
for (i = 0; i < slen; i++) {
if (str[i] == what) {
return str + i;
}
}
return NULL;
}
// fast compare 2 sized strings
int uwsgi_strncmp(char *src, int slen, char *dst, int dlen) {
if (slen != dlen)
return 1;
return memcmp(src, dst, dlen);
}
// fast sized check of initial part of a string
int uwsgi_starts_with(char *src, int slen, char *dst, int dlen) {
if (slen < dlen)
return -1;
return memcmp(src, dst, dlen);
}
// unsized check
int uwsgi_startswith(char *src, char *what, int wlen) {
int i;
for (i = 0; i < wlen; i++) {
if (src[i] != what[i])
return -1;
}
return 0;
}
// concatenate strings
char *uwsgi_concatn(int c, ...) {
va_list s;
char *item;
int j = c;
char *buf;
size_t len = 1;
size_t tlen = 1;
va_start(s, c);
while (j > 0) {
item = va_arg(s, char *);
if (item == NULL) {
break;
}
len += va_arg(s, int);
j--;
}
va_end(s);
buf = uwsgi_malloc(len);
memset(buf, 0, len);
j = c;
len = 0;
va_start(s, c);
while (j > 0) {
item = va_arg(s, char *);
if (item == NULL) {
break;
}
tlen = va_arg(s, int);
memcpy(buf + len, item, tlen);
len += tlen;
j--;
}
va_end(s);
return buf;
}
char *uwsgi_concat2(char *one, char *two) {
char *buf;
size_t len = strlen(one) + strlen(two) + 1;
buf = uwsgi_malloc(len);
buf[len - 1] = 0;
memcpy(buf, one, strlen(one));
memcpy(buf + strlen(one), two, strlen(two));
return buf;
}
char *uwsgi_concat4(char *one, char *two, char *three, char *four) {
char *buf;
size_t len = strlen(one) + strlen(two) + strlen(three) + strlen(four) + 1;
buf = uwsgi_malloc(len);
buf[len - 1] = 0;
memcpy(buf, one, strlen(one));
memcpy(buf + strlen(one), two, strlen(two));
memcpy(buf + strlen(one) + strlen(two), three, strlen(three));
memcpy(buf + strlen(one) + strlen(two) + strlen(three), four, strlen(four));
return buf;
}
char *uwsgi_concat3(char *one, char *two, char *three) {
char *buf;
size_t len = strlen(one) + strlen(two) + strlen(three) + 1;
buf = uwsgi_malloc(len);
buf[len - 1] = 0;
memcpy(buf, one, strlen(one));
memcpy(buf + strlen(one), two, strlen(two));
memcpy(buf + strlen(one) + strlen(two), three, strlen(three));
return buf;
}
char *uwsgi_concat2n(char *one, int s1, char *two, int s2) {
char *buf;
size_t len = s1 + s2 + 1;
buf = uwsgi_malloc(len);
buf[len - 1] = 0;
memcpy(buf, one, s1);
memcpy(buf + s1, two, s2);
return buf;
}
char *uwsgi_concat2nn(char *one, int s1, char *two, int s2, int *len) {
char *buf;
*len = s1 + s2 + 1;
buf = uwsgi_malloc(*len);
buf[*len - 1] = 0;
memcpy(buf, one, s1);
memcpy(buf + s1, two, s2);
return buf;
}
char *uwsgi_concat3n(char *one, int s1, char *two, int s2, char *three, int s3) {
char *buf;
size_t len = s1 + s2 + s3 + 1;
buf = uwsgi_malloc(len);
buf[len - 1] = 0;
memcpy(buf, one, s1);
memcpy(buf + s1, two, s2);
memcpy(buf + s1 + s2, three, s3);
return buf;
}
char *uwsgi_concat4n(char *one, int s1, char *two, int s2, char *three, int s3, char *four, int s4) {
char *buf;
size_t len = s1 + s2 + s3 + s4 + 1;
buf = uwsgi_malloc(len);
buf[len - 1] = 0;
memcpy(buf, one, s1);
memcpy(buf + s1, two, s2);
memcpy(buf + s1 + s2, three, s3);
memcpy(buf + s1 + s2 + s3, four, s4);
return buf;
}
// concat unsized strings
char *uwsgi_concat(int c, ...) {
va_list s;
char *item;
size_t len = 1;
int j = c;
char *buf;
va_start(s, c);
while (j > 0) {
item = va_arg(s, char *);
if (item == NULL) {
break;
}
len += (int) strlen(item);
j--;
}
va_end(s);
buf = uwsgi_malloc(len);
memset(buf, 0, len);
j = c;
len = 0;
va_start(s, c);
while (j > 0) {
item = va_arg(s, char *);
if (item == NULL) {
break;
}
memcpy(buf + len, item, strlen(item));
len += strlen(item);
j--;
}
va_end(s);
return buf;
}
char *uwsgi_strncopy(char *s, int len) {
char *buf;
buf = uwsgi_malloc(len + 1);
buf[len] = 0;
memcpy(buf, s, len);
return buf;
}
// get the application id
int uwsgi_get_app_id(char *app_name, int app_name_len, int modifier1) {
int i;
struct stat st;
int found;
for (i = 0; i < uwsgi_apps_cnt; i++) {
// reset check
found = 0;
#ifdef UWSGI_DEBUG
uwsgi_log("searching for %.*s in %.*s %p\n", app_name_len, app_name, uwsgi_apps[i].mountpoint_len, uwsgi_apps[i].mountpoint, uwsgi_apps[i].callable);
#endif
if (!uwsgi_apps[i].callable) {
continue;
}
if (!uwsgi_strncmp(uwsgi_apps[i].mountpoint, uwsgi_apps[i].mountpoint_len, app_name, app_name_len)) {
found = 1;
}
if (found) {
if (uwsgi_apps[i].touch_reload[0]) {
if (!stat(uwsgi_apps[i].touch_reload, &st)) {
if (st.st_mtime != uwsgi_apps[i].touch_reload_mtime) {
// serve the new request and reload
uwsgi.workers[uwsgi.mywid].manage_next_request = 0;
if (uwsgi.threads > 1) {
uwsgi.workers[uwsgi.mywid].destroy = 1;
}
#ifdef UWSGI_DEBUG
uwsgi_log("mtime %d %d\n", st.st_mtime, uwsgi_apps[i].touch_reload_mtime);
#endif
}
}
}
if (modifier1 == -1)
return i;
if (modifier1 == uwsgi_apps[i].modifier1)
return i;
}
}
return -1;
}
int uwsgi_count_options(struct uwsgi_option *uopt) {
struct uwsgi_option *aopt;
int count = 0;
while ((aopt = uopt)) {
if (!aopt->name)
break;
count++;
uopt++;
}
return count;
}
int uwsgi_read_whole_body_in_mem(struct wsgi_request *wsgi_req, char *buf) {
size_t post_remains = wsgi_req->post_cl;
int ret;
ssize_t len;
char *ptr = buf;
while (post_remains > 0) {
if (uwsgi.shared->options[UWSGI_OPTION_HARAKIRI] > 0) {
inc_harakiri(uwsgi.shared->options[UWSGI_OPTION_SOCKET_TIMEOUT]);
}
ret = uwsgi_waitfd(wsgi_req->poll.fd, uwsgi.shared->options[UWSGI_OPTION_SOCKET_TIMEOUT]);
if (ret < 0) {
return 0;
}
if (!ret) {
uwsgi_log("buffering POST data to memory timed-out !!! (Content-Length: %llu received: %llu)\n", (unsigned long long) wsgi_req->post_cl, (unsigned long long) wsgi_req->post_cl - post_remains);
return 0;
}
if (wsgi_req->socket->proto_read_body) {
len = wsgi_req->socket->proto_read_body(wsgi_req, ptr, post_remains);
}
else {
len = read(wsgi_req->poll.fd, ptr, post_remains);
}
if (len < 0) {
uwsgi_error("read()");
return 0;
}
if (len == 0) {
uwsgi_log("client did not send the whole body: %s (Content-Length: %llu received: %llu)\n", strerror(errno), (unsigned long long) wsgi_req->post_cl, (unsigned long long) wsgi_req->post_cl - post_remains);
return 0;
}
ptr += len;
post_remains -= len;
}
return 1;
}
int uwsgi_read_whole_body(struct wsgi_request *wsgi_req, char *buf, size_t len) {
size_t post_remains = wsgi_req->post_cl;
ssize_t post_chunk;
int ret, i;
int upload_progress_fd = -1;
char *upload_progress_filename = NULL;
const char *x_progress_id = "X-Progress-ID=";
char *xpi_ptr = (char *) x_progress_id;
wsgi_req->async_post = tmpfile();
if (!wsgi_req->async_post) {
uwsgi_error("tmpfile()");
return 0;
}
if (uwsgi.upload_progress) {
// first check for X-Progress-ID size
// separator + 'X-Progress-ID' + '=' + uuid
if (wsgi_req->uri_len > 51) {
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) {
uwsgi_log("upload progress uuid = %.*s\n", 36, upload_progress_filename);
if (!check_hex(upload_progress_filename, 8))
goto cycle;
if (upload_progress_filename[8] != '-')
goto cycle;
if (!check_hex(upload_progress_filename + 9, 4))
goto cycle;
if (upload_progress_filename[13] != '-')
goto cycle;
if (!check_hex(upload_progress_filename + 14, 4))
goto cycle;
if (upload_progress_filename[18] != '-')
goto cycle;
if (!check_hex(upload_progress_filename + 19, 4))
goto cycle;
if (upload_progress_filename[23] != '-')
goto cycle;
if (!check_hex(upload_progress_filename + 24, 12))
goto cycle;
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
upload_progress_fd = open(upload_progress_filename, O_WRONLY | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR | S_IRGRP);
if (upload_progress_fd < 0) {
uwsgi_error_open(upload_progress_filename);
free(upload_progress_filename);
}
}
}
}
cycle:
if (upload_progress_filename && upload_progress_fd == -1) {
uwsgi_log("invalid X-Progress-ID value: must be a UUID\n");
}
// manage buffered data and upload progress
while (post_remains > 0) {
if (uwsgi.shared->options[UWSGI_OPTION_HARAKIRI] > 0) {
inc_harakiri(uwsgi.shared->options[UWSGI_OPTION_SOCKET_TIMEOUT]);
}
ret = uwsgi_waitfd(wsgi_req->poll.fd, uwsgi.shared->options[UWSGI_OPTION_SOCKET_TIMEOUT]);
if (ret < 0) {
return 0;
}
if (!ret) {
uwsgi_log("buffering POST data to disk timed-out !!! (Content-Length: %llu received: %llu)\n", (unsigned long long) wsgi_req->post_cl, (unsigned long long) wsgi_req->post_cl - post_remains);
goto end;
}
if (post_remains > len) {
if (wsgi_req->socket->proto_read_body) {
post_chunk = wsgi_req->socket->proto_read_body(wsgi_req, buf, len);
}
else {
post_chunk = read(wsgi_req->poll.fd, buf, len);
}
}
else {
if (wsgi_req->socket->proto_read_body) {
post_chunk = wsgi_req->socket->proto_read_body(wsgi_req, buf, len);
}
else {
post_chunk = read(wsgi_req->poll.fd, buf, post_remains);
}
}
if (post_chunk < 0) {
uwsgi_error("read()");
goto end;
}
if (post_chunk == 0) {
uwsgi_log("client did not send the whole body: %s (Content-Length: %llu received: %llu)\n", strerror(errno), (unsigned long long) wsgi_req->post_cl, (unsigned long long) wsgi_req->post_cl - post_remains);
goto end;
}
if (fwrite(buf, post_chunk, 1, wsgi_req->async_post) != 1) {
uwsgi_error("fwrite()");
goto end;
}
if (upload_progress_fd > -1) {
//write json data to the upload progress file
if (lseek(upload_progress_fd, 0, SEEK_SET)) {
uwsgi_error("lseek()");
goto end;
}
// reuse buf for json buffer
ret = snprintf(buf, len, "{ \"state\" : \"uploading\", \"received\" : %d, \"size\" : %d }\r\n", (int) (wsgi_req->post_cl - post_remains), (int) wsgi_req->post_cl);
if (ret < 0) {
uwsgi_log("unable to write JSON data in upload progress file %s\n", upload_progress_filename);
goto end;
}
if (write(upload_progress_fd, buf, ret) < 0) {
uwsgi_error("write()");
goto end;
}
if (fsync(upload_progress_fd)) {
uwsgi_error("fsync()");
}
}
post_remains -= post_chunk;
}
rewind(wsgi_req->async_post);
if (upload_progress_fd > -1) {
close(upload_progress_fd);
if (unlink(upload_progress_filename)) {
uwsgi_error("unlink()");
}
free(upload_progress_filename);
}
return 1;
end:
if (upload_progress_fd > -1) {
close(upload_progress_fd);
if (unlink(upload_progress_filename)) {
uwsgi_error("unlink()");
}
free(upload_progress_filename);
}
return 0;
}
struct uwsgi_option *uwsgi_opt_get(char *name) {
struct uwsgi_option *op = uwsgi.options;
while (op->name) {
if (!strcmp(name, op->name)) {
return op;
}
op++;
}
return NULL;
}
char *uwsgi_substitute(char *src, char *what, char *with) {
int count = 0;
if (!with)
return src;
size_t len = strlen(src);
size_t wlen = strlen(what);
size_t with_len = strlen(with);
char *p = strstr(src, what);
if (!p) {
return src;
}
while (p) {
count++;
p = strstr(p + wlen, what);
}
len += (count * with_len) + 1;
char *dst = uwsgi_calloc(len);
char *ptr = src;
p = strstr(ptr, what);
while (p) {
strncat(dst, ptr, (p - ptr));
strncat(dst, with, with_len);
ptr = p + wlen;
p = strstr(ptr, what);
}
strncat(dst, ptr, strlen(ptr));
return dst;
}
int uwsgi_is_file(char *filename) {
struct stat st;
if (stat(filename, &st)) {
return 0;
}
if (S_ISREG(st.st_mode))
return 1;
return 0;
}
int uwsgi_is_dir(char *filename) {
struct stat st;
if (stat(filename, &st)) {
return 0;
}
if (S_ISDIR(st.st_mode))
return 1;
return 0;
}
int uwsgi_is_link(char *filename) {
struct stat st;
if (lstat(filename, &st)) {
return 0;
}
if (S_ISLNK(st.st_mode))
return 1;
return 0;
}
int uwsgi_logic_opt_if_opt(char *key, char *value) {
// check for env-value syntax
char *equal = strchr(uwsgi.logic_opt_data, '=');
if (equal)
*equal = 0;
char *p = uwsgi_get_exported_opt(uwsgi.logic_opt_data);
if (equal)
*equal = '=';
if (p) {
if (equal) {
if (strcmp(equal + 1, p))
return 0;
}
add_exported_option(key, uwsgi_substitute(value, "%(_)", p), 0);
return 1;
}
return 0;
}
int uwsgi_logic_opt_if_not_opt(char *key, char *value) {
// check for env-value syntax
char *equal = strchr(uwsgi.logic_opt_data, '=');
if (equal)
*equal = 0;
char *p = uwsgi_get_exported_opt(uwsgi.logic_opt_data);
if (equal)
*equal = '=';
if (p) {
if (equal) {
if (!strcmp(equal + 1, p))
return 0;
}
else {
return 0;
}
}
add_exported_option(key, uwsgi_substitute(value, "%(_)", p), 0);
return 1;
}
int uwsgi_logic_opt_if_env(char *key, char *value) {
// check for env-value syntax
char *equal = strchr(uwsgi.logic_opt_data, '=');
if (equal)
*equal = 0;
char *p = getenv(uwsgi.logic_opt_data);
if (equal)
*equal = '=';
if (p) {
if (equal) {
if (strcmp(equal + 1, p))
return 0;
}
add_exported_option(key, uwsgi_substitute(value, "%(_)", p), 0);
return 1;
}
return 0;
}
int uwsgi_logic_opt_if_not_env(char *key, char *value) {
// check for env-value syntax
char *equal = strchr(uwsgi.logic_opt_data, '=');
if (equal)
*equal = 0;
char *p = getenv(uwsgi.logic_opt_data);
if (equal)
*equal = '=';
if (p) {
if (equal) {
if (!strcmp(equal + 1, p))
return 0;
}
else {
return 0;
}
}
add_exported_option(key, uwsgi_substitute(value, "%(_)", p), 0);
return 1;
}
int uwsgi_logic_opt_if_reload(char *key, char *value) {
if (uwsgi.is_a_reload) {
add_exported_option(key, value, 0);
return 1;
}
return 0;
}
int uwsgi_logic_opt_if_not_reload(char *key, char *value) {
if (!uwsgi.is_a_reload) {
add_exported_option(key, value, 0);
return 1;
}
return 0;
}
int uwsgi_logic_opt_if_file(char *key, char *value) {
if (uwsgi_is_file(uwsgi.logic_opt_data)) {
add_exported_option(key, uwsgi_substitute(value, "%(_)", uwsgi.logic_opt_data), 0);
return 1;
}
return 0;
}
int uwsgi_logic_opt_if_not_file(char *key, char *value) {
if (!uwsgi_is_file(uwsgi.logic_opt_data)) {
add_exported_option(key, uwsgi_substitute(value, "%(_)", uwsgi.logic_opt_data), 0);
return 1;
}
return 0;
}
int uwsgi_logic_opt_if_dir(char *key, char *value) {
if (uwsgi_is_dir(uwsgi.logic_opt_data)) {
add_exported_option(key, uwsgi_substitute(value, "%(_)", uwsgi.logic_opt_data), 0);
return 1;
}
return 0;
}
int uwsgi_logic_opt_if_not_dir(char *key, char *value) {
if (!uwsgi_is_dir(uwsgi.logic_opt_data)) {
add_exported_option(key, uwsgi_substitute(value, "%(_)", uwsgi.logic_opt_data), 0);
return 1;
}
return 0;
}
int uwsgi_logic_opt_if_exists(char *key, char *value) {
if (uwsgi_file_exists(uwsgi.logic_opt_data)) {
add_exported_option(key, uwsgi_substitute(value, "%(_)", uwsgi.logic_opt_data), 0);
return 1;
}
return 0;
}
int uwsgi_logic_opt_if_not_exists(char *key, char *value) {
if (!uwsgi_file_exists(uwsgi.logic_opt_data)) {
add_exported_option(key, uwsgi_substitute(value, "%(_)", uwsgi.logic_opt_data), 0);
return 1;
}
return 0;
}
int uwsgi_logic_opt_for(char *key, char *value) {
char *p = strtok(uwsgi.logic_opt_data, " ");
while (p) {
add_exported_option(key, uwsgi_substitute(value, "%(_)", p), 0);
p = strtok(NULL, " ");
}
return 1;
}
void add_exported_option(char *key, char *value, int configured) {
struct uwsgi_string_list *blacklist = uwsgi.blacklist;
struct uwsgi_string_list *whitelist = uwsgi.whitelist;
while (blacklist) {
if (!strcmp(key, blacklist->value)) {
uwsgi_log("uWSGI error: forbidden option \"%s\"\n", key);
exit(1);
}
blacklist = blacklist->next;
}
if (whitelist) {
int allowed = 0;
while (whitelist) {
if (!strcmp(key, whitelist->value)) {
allowed = 1;
break;
}
whitelist = whitelist->next;
}
if (!allowed) {
uwsgi_log("uWSGI error: forbidden option \"%s\"\n", key);
exit(1);
}
}
if (uwsgi.logic_opt_running)
goto add;
if (!strcmp(key, "end") || !strcmp(key, "endfor") || !strcmp(key, "endif")) {
if (uwsgi.logic_opt_data) {
free(uwsgi.logic_opt_data);
}
uwsgi.logic_opt = NULL;
uwsgi.logic_opt_arg = NULL;
uwsgi.logic_opt_cycles = 0;
uwsgi.logic_opt_data = NULL;
}
if (uwsgi.logic_opt) {
if (uwsgi.logic_opt_data) {
free(uwsgi.logic_opt_data);
}
uwsgi.logic_opt_data = uwsgi_str(uwsgi.logic_opt_arg);
uwsgi.logic_opt_cycles++;
uwsgi.logic_opt_running = 1;
uwsgi.logic_opt(key, value);
uwsgi.logic_opt_running = 0;
return;
}
add:
if (!uwsgi.exported_opts) {
uwsgi.exported_opts = uwsgi_malloc(sizeof(struct uwsgi_opt *));
}
else {
uwsgi.exported_opts = realloc(uwsgi.exported_opts, sizeof(struct uwsgi_opt *) * (uwsgi.exported_opts_cnt + 1));
if (!uwsgi.exported_opts) {
uwsgi_error("realloc()");
exit(1);
}
}
int id = uwsgi.exported_opts_cnt;
uwsgi.exported_opts[id] = uwsgi_malloc(sizeof(struct uwsgi_opt));
uwsgi.exported_opts[id]->key = key;
uwsgi.exported_opts[id]->value = value;
uwsgi.exported_opts[id]->configured = configured;
uwsgi.exported_opts_cnt++;
uwsgi.dirty_config = 1;
struct uwsgi_option *op = uwsgi_opt_get(key);
if (op) {
// requires master ?
if (op->flags & UWSGI_OPT_MASTER) {
uwsgi.master_process = 1;
}
// requires log_master ?
if (op->flags & UWSGI_OPT_LOG_MASTER) {
uwsgi.master_process = 1;
uwsgi.log_master = 1;
}
// requires threads ?
if (op->flags & UWSGI_OPT_THREADS) {
uwsgi.has_threads = 1;
}
// requires cheaper mode ?
if (op->flags & UWSGI_OPT_CHEAPER) {
uwsgi.cheaper = 1;
}
// requires virtualhosting ?
if (op->flags & UWSGI_OPT_VHOST) {
uwsgi.vhost = 1;
}
// requires memusage ?
if (op->flags & UWSGI_OPT_MEMORY) {
uwsgi.force_get_memusage = 1;
}
// requires auto procname ?
if (op->flags & UWSGI_OPT_PROCNAME) {
uwsgi.auto_procname = 1;
}
// requires lazy ?
if (op->flags & UWSGI_OPT_LAZY) {
uwsgi.lazy = 1;
}
// requires no_initial ?
if (op->flags & UWSGI_OPT_NO_INITIAL) {
uwsgi.no_initial_output = 1;
}
// requires no_server ?
if (op->flags & UWSGI_OPT_NO_SERVER) {
uwsgi.no_server = 1;
}
// requires cluster ?
if (op->flags & UWSGI_OPT_CLUSTER) {
uwsgi.cluster = value;
}
// requires post_buffering ?
if (op->flags & UWSGI_OPT_POST_BUFFERING) {
if (!uwsgi.post_buffering)
uwsgi.post_buffering = 4096;
}
// requires building mime dict ?
if (op->flags & UWSGI_OPT_MIME) {
uwsgi.build_mime_dict = 1;
}
// immediate ?
if (op->flags & UWSGI_OPT_IMMEDIATE) {
op->func(key, value, op->data);
uwsgi.exported_opts[id]->configured = 1;
}
}
}
int uwsgi_waitfd_event(int fd, int timeout, int event) {
int ret;
struct pollfd upoll;
if (!timeout)
timeout = uwsgi.shared->options[UWSGI_OPTION_SOCKET_TIMEOUT];
timeout = timeout * 1000;
if (timeout < 0)
timeout = -1;
upoll.fd = fd;
upoll.events = event;
upoll.revents = 0;
ret = poll(&upoll, 1, timeout);
if (ret < 0) {
uwsgi_error("poll()");
}
else if (ret > 0) {
if (upoll.revents & event) {
return ret;
}
return -1;
}
return ret;
}
void *uwsgi_malloc(size_t size) {
char *ptr = malloc(size);
if (ptr == NULL) {
uwsgi_error("malloc()");
uwsgi_log("!!! tried memory allocation of %llu bytes !!!\n", (unsigned long long) size);
uwsgi_backtrace(uwsgi.backtrace_depth);
exit(1);
}
return ptr;
}
void *uwsgi_calloc(size_t size) {
char *ptr = uwsgi_malloc(size);
memset(ptr, 0, size);
return ptr;
}
char *uwsgi_cheap_string(char *buf, int len) {
int i;
char *cheap_buf = buf - 1;
for (i = 0; i < len; i++) {
*cheap_buf++ = buf[i];
}
buf[len - 1] = 0;
return buf - 1;
}
char *uwsgi_resolve_ip(char *domain) {
struct hostent *he;
he = gethostbyname(domain);
if (!he || !*he->h_addr_list || (he->h_addrtype != AF_INET
#ifdef UWSGI_IPV6
&& he->h_addrtype != AF_INET6
#endif
)) {
return NULL;
}
return inet_ntoa(*(struct in_addr *) he->h_addr_list[0]);
}
int uwsgi_file_exists(char *filename) {
// TODO check for http url or stdin
return !access(filename, R_OK);
}
char *uwsgi_read_fd(int fd, int *size, int add_zero) {
char stack_buf[4096];
ssize_t len;
char *buffer = NULL;
len = 1;
while (len > 0) {
len = read(fd, stack_buf, 4096);
if (len > 0) {
*size += len;
buffer = realloc(buffer, *size);
memcpy(buffer + (*size - len), stack_buf, len);
}
}
if (add_zero) {
*size = *size + 1;
buffer = realloc(buffer, *size);
buffer[*size - 1] = 0;
}
return buffer;
}
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 *) "";
}
char *uwsgi_open_and_read(char *url, int *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);
}
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;
buffer = realloc(buffer, *size);
if (!buffer) {
uwsgi_error("realloc()");
exit(1);
}
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;
buffer = realloc(buffer, *size);
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);
}
char *tmp_buffer[4096];
ssize_t rlen = 1;
*size = 0;
while (rlen > 0) {
rlen = read(uwsgi.emperor_fd_config, tmp_buffer, 4096);
if (rlen > 0) {
*size += rlen;
buffer = realloc(buffer, *size);
if (!buffer) {
uwsgi_error("realloc()");
exit(1);
}
memcpy(buffer + (*size - rlen), tmp_buffer, rlen);
}
}
close(uwsgi.emperor_fd_config);
uwsgi.emperor_fd_config = -1;
if (add_zero) {
*size = *size + 1;
buffer = realloc(buffer, *size);
buffer[*size - 1] = 0;
}
}
#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 = malloc(sb.st_size + add_zero);
if (!buffer) {
uwsgi_error("malloc()");
exit(1);
}
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 *magic_sub(char *buffer, int len, int *size, char *magic_table[]) {
int i;
size_t magic_len = 0;
char *magic_buf = uwsgi_malloc(len);
char *magic_ptr = magic_buf;
char *old_magic_buf;
for (i = 0; i < len; i++) {
if (buffer[i] == '%' && (i + 1) < len && magic_table[(unsigned char) buffer[i + 1]]) {
old_magic_buf = magic_buf;
magic_buf = uwsgi_concat3n(old_magic_buf, magic_len, magic_table[(unsigned char) buffer[i + 1]], strlen(magic_table[(unsigned char) buffer[i + 1]]), buffer + i + 2, len - i);
free(old_magic_buf);
magic_len += strlen(magic_table[(unsigned char) buffer[i + 1]]);
magic_ptr = magic_buf + magic_len;
i++;
}
else {
*magic_ptr = buffer[i];
magic_ptr++;
magic_len++;
}
}
*size = magic_len;
return magic_buf;
}
void init_magic_table(char *magic_table[]) {
int i;
for (i = 0; i <= 0xff; i++) {
magic_table[i] = "";
}
magic_table['%'] = "%";
magic_table['('] = "%(";
}
char *uwsgi_get_last_char(char *what, char c) {
int i, j = 0;
char *ptr = NULL;
if (!strncmp("http://", what, 7))
j = 7;
if (!strncmp("emperor://", what, 10))
j = 10;
for (i = j; i < (int) strlen(what); i++) {
if (what[i] == c) {
ptr = what + i;
}
}
return ptr;
}
char *uwsgi_num2str(int num) {
char *str = uwsgi_malloc(11);
snprintf(str, 11, "%d", num);
return str;
}
int uwsgi_num2str2(int num, char *ptr) {
return snprintf(ptr, 11, "%d", num);
}
int uwsgi_num2str2n(int num, char *ptr, int size) {
return snprintf(ptr, size, "%d", num);
}
int uwsgi_long2str2n(unsigned long long num, char *ptr, int size) {
int ret = snprintf(ptr, size, "%llu", num);
if (ret < 0)
return 0;
return ret;
}
int is_unix(char *socket_name, int len) {
int i;
for (i = 0; i < len; i++) {
if (socket_name[i] == ':')
return 0;
}
return 1;
}
int is_a_number(char *what) {
int i;
for (i = 0; i < (int) strlen(what); i++) {
if (!isdigit((int) what[i]))
return 0;
}
return 1;
}
void uwsgi_unix_signal(int signum, void (*func) (int)) {
struct sigaction sa;
memset(&sa, 0, sizeof(struct sigaction));
sa.sa_handler = func;
sigemptyset(&sa.sa_mask);
if (sigaction(signum, &sa, NULL) < 0) {
uwsgi_error("sigaction()");
}
}
char *uwsgi_get_exported_opt(char *key) {
int i;
for (i = 0; i < uwsgi.exported_opts_cnt; i++) {
if (!strcmp(uwsgi.exported_opts[i]->key, key)) {
return uwsgi.exported_opts[i]->value;
}
}
return NULL;
}
char *uwsgi_get_optname_by_index(int index) {
struct uwsgi_option *op = uwsgi.options;
while (op->name) {
if (op->shortcut == index) {
return op->name;
}
op++;
}
return NULL;
}
int uwsgi_list_has_num(char *list, int num) {
char *list2 = uwsgi_concat2(list, "");
char *p = strtok(list2, ",");
while (p != NULL) {
if (atoi(p) == num) {
free(list2);
return 1;
}
p = strtok(NULL, ",");
}
free(list2);
return 0;
}
int uwsgi_list_has_str(char *list, char *str) {
char *list2 = uwsgi_concat2(list + 1, "");
char *p = strtok(list2, " ");
while (p != NULL) {
if (!strcasecmp(p, str)) {
free(list2);
return 1;
}
p = strtok(NULL, " ");
}
free(list2);
return 0;
}
char hex2num(char *str) {
char val = 0;
val <<= 4;
if (str[0] >= '0' && str[0] <= '9') {
val += str[0] & 0x0F;
}
else if (str[0] >= 'A' && str[0] <= 'F') {
val += (str[0] & 0x0F) + 9;
}
else {
return 0;
}
val <<= 4;
if (str[1] >= '0' && str[1] <= '9') {
val += str[1] & 0x0F;
}
else if (str[1] >= 'A' && str[1] <= 'F') {
val += (str[1] & 0x0F) + 9;
}
else {
return 0;
}
return val;
}
int uwsgi_str2_num(char *str) {
int num = 0;
num = 10 * (str[0] - 48);
num += str[1] - 48;
return num;
}
int uwsgi_str3_num(char *str) {
int num = 0;
num = 100 * (str[0] - 48);
num += 10 * (str[1] - 48);
num += str[2] - 48;
return num;
}
int uwsgi_str4_num(char *str) {
int num = 0;
num = 1000 * (str[0] - 48);
num += 100 * (str[1] - 48);
num += 10 * (str[2] - 48);
num += str[3] - 48;
return num;
}
size_t uwsgi_str_num(char *str, int len) {
int i;
size_t num = 0;
size_t delta = pow(10, len);
for (i = 0; i < len; i++) {
delta = delta / 10;
num += delta * (str[i] - 48);
}
return num;
}
char *uwsgi_split3(char *buf, size_t len, char sep, char **part1, size_t * part1_len, char **part2, size_t * part2_len, char **part3, size_t * part3_len) {
size_t i;
int status = 0;
*part1 = NULL;
*part2 = NULL;
*part3 = NULL;
for (i = 0; i < len; i++) {
if (buf[i] == sep) {
// get part1
if (status == 0) {
*part1 = buf;
*part1_len = i;
status = 1;
}
// get part2
else if (status == 1) {
*part2 = *part1 + *part1_len + 1;
*part2_len = (buf + i) - *part2;
break;
}
}
}
if (*part1 && *part2) {
if (*part2 + *part2_len + 1 > buf + len) {
return NULL;
}
*part3 = *part2 + *part2_len + 1;
*part3_len = (buf + len) - *part3;
return buf + len;
}
return NULL;
}
char *uwsgi_split4(char *buf, size_t len, char sep, char **part1, size_t * part1_len, char **part2, size_t * part2_len, char **part3, size_t * part3_len, char **part4, size_t * part4_len) {
size_t i;
int status = 0;
*part1 = NULL;
*part2 = NULL;
*part3 = NULL;
*part4 = NULL;
for (i = 0; i < len; i++) {
if (buf[i] == sep) {
// get part1
if (status == 0) {
*part1 = buf;
*part1_len = i;
status = 1;
}
// get part2
else if (status == 1) {
*part2 = *part1 + *part1_len + 1;
*part2_len = (buf + i) - *part2;
status = 2;
}
// get part3
else if (status == 2) {
*part3 = *part2 + *part2_len + 1;
*part3_len = (buf + i) - *part3;
break;
}
}
}
if (*part1 && *part2 && *part3) {
if (*part3 + *part3_len + 1 > buf + len) {
return NULL;
}
*part4 = *part3 + *part3_len + 1;
*part4_len = (buf + len) - *part4;
return buf + len;
}
return NULL;
}
char *uwsgi_netstring(char *buf, size_t len, char **netstring, size_t * netstring_len) {
char *ptr = buf;
char *watermark = buf + len;
*netstring_len = 0;
while (ptr < watermark) {
// end of string size ?
if (*ptr == ':') {
*netstring_len = uwsgi_str_num(buf, ptr - buf);
if (ptr + *netstring_len + 2 > watermark) {
return NULL;
}
*netstring = ptr + 1;
return ptr + *netstring_len + 2;
}
ptr++;
}
return NULL;
}
struct uwsgi_dyn_dict *uwsgi_dyn_dict_new(struct uwsgi_dyn_dict **dd, char *key, int keylen, char *val, int vallen) {
struct uwsgi_dyn_dict *uwsgi_dd = *dd, *old_dd;
if (!uwsgi_dd) {
*dd = uwsgi_malloc(sizeof(struct uwsgi_dyn_dict));
uwsgi_dd = *dd;
uwsgi_dd->prev = NULL;
}
else {
while (uwsgi_dd) {
old_dd = uwsgi_dd;
uwsgi_dd = uwsgi_dd->next;
}
uwsgi_dd = uwsgi_malloc(sizeof(struct uwsgi_dyn_dict));
old_dd->next = uwsgi_dd;
uwsgi_dd->prev = old_dd;
}
uwsgi_dd->key = key;
uwsgi_dd->keylen = keylen;
uwsgi_dd->value = val;
uwsgi_dd->vallen = vallen;
uwsgi_dd->hits = 0;
uwsgi_dd->status = 0;
uwsgi_dd->next = NULL;
return uwsgi_dd;
}
void uwsgi_dyn_dict_del(struct uwsgi_dyn_dict *item) {
struct uwsgi_dyn_dict *prev = item->prev;
struct uwsgi_dyn_dict *next = item->next;
if (prev) {
prev->next = next;
}
if (next) {
next->prev = prev;
}
free(item);
}
void *uwsgi_malloc_shared(size_t size) {
void *addr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
if (addr == MAP_FAILED) {
uwsgi_log("unable to allocate %llu bytes (%lluMB)\n", (unsigned long long) size, (unsigned long long) (size / (1024 * 1024)));
uwsgi_error("mmap()");
exit(1);
}
return addr;
}
void *uwsgi_calloc_shared(size_t size) {
void *ptr = uwsgi_malloc_shared(size);
memset(ptr, 0, size);
return ptr;
}
struct uwsgi_string_list *uwsgi_string_new_list(struct uwsgi_string_list **list, char *value) {
struct uwsgi_string_list *uwsgi_string = *list, *old_uwsgi_string;
if (!uwsgi_string) {
*list = uwsgi_malloc(sizeof(struct uwsgi_string_list));
uwsgi_string = *list;
}
else {
while (uwsgi_string) {
old_uwsgi_string = uwsgi_string;
uwsgi_string = uwsgi_string->next;
}
uwsgi_string = uwsgi_malloc(sizeof(struct uwsgi_string_list));
old_uwsgi_string->next = uwsgi_string;
}
uwsgi_string->value = value;
uwsgi_string->len = 0;
if (value) {
uwsgi_string->len = strlen(value);
}
uwsgi_string->next = NULL;
uwsgi_string->custom = 0;
return uwsgi_string;
}
#ifdef UWSGI_PCRE
struct uwsgi_regexp_list *uwsgi_regexp_custom_new_list(struct uwsgi_regexp_list **list, char *value, char *custom) {
struct uwsgi_regexp_list *url = *list, *old_url;
if (!url) {
*list = uwsgi_malloc(sizeof(struct uwsgi_regexp_list));
url = *list;
}
else {
while (url) {
old_url = url;
url = url->next;
}
url = uwsgi_malloc(sizeof(struct uwsgi_regexp_list));
old_url->next = url;
}
if (uwsgi_regexp_build(value, &url->pattern, &url->pattern_extra)) {
exit(1);
}
url->next = NULL;
url->custom = 0;
url->custom_ptr = NULL;
url->custom_str = custom;
return url;
}
#endif
char *uwsgi_string_get_list(struct uwsgi_string_list **list, int pos, size_t * len) {
struct uwsgi_string_list *uwsgi_string = *list;
int counter = 0;
while (uwsgi_string) {
if (counter == pos) {
*len = uwsgi_string->len;
return uwsgi_string->value;
}
uwsgi_string = uwsgi_string->next;
counter++;
}
*len = 0;
return NULL;
}
void uwsgi_string_del_list(struct uwsgi_string_list **list, struct uwsgi_string_list *item) {
struct uwsgi_string_list *uwsgi_string = *list, *old_uwsgi_string = NULL;
while (uwsgi_string) {
if (uwsgi_string == item) {
// parent instance ?
if (old_uwsgi_string == NULL) {
*list = uwsgi_string->next;
}
else {
old_uwsgi_string->next = uwsgi_string->next;
}
free(uwsgi_string);
return;
}
old_uwsgi_string = uwsgi_string;
uwsgi_string = uwsgi_string->next;
}
}
void uwsgi_sig_pause() {
sigset_t mask;
sigemptyset(&mask);
sigsuspend(&mask);
}
void uwsgi_exec_command_with_args(char *cmdline) {
char *argv[4];
argv[0] = "/bin/sh";
argv[1] = "-c";
argv[2] = cmdline;
argv[3] = NULL;
execvp(argv[0], argv);
uwsgi_error("execvp()");
exit(1);
}
int uwsgi_run_command_and_wait(char *command, char *arg) {
char *argv[4];
int waitpid_status = 0;
pid_t pid = fork();
if (pid < 0) {
return -1;
}
if (pid > 0) {
if (waitpid(pid, &waitpid_status, 0) < 0) {
uwsgi_error("waitpid()");
return -1;
}
return WEXITSTATUS(waitpid_status);
}
#ifdef __linux__
if (prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0)) {
uwsgi_error("prctl()");
}
#endif
if (command == NULL) {
argv[0] = "/bin/sh";
argv[1] = "-c";
argv[2] = arg;
argv[3] = NULL;
execvp(argv[0], argv);
}
else {
argv[0] = command;
argv[1] = arg;
argv[2] = NULL;
execvp(command, argv);
}
uwsgi_error("execvp()");
//never here
exit(1);
}
pid_t uwsgi_run_command(char *command, int *stdin_fd, int stdout_fd) {
char *argv[4];
int waitpid_status = 0;
pid_t pid = fork();
if (pid < 0) {
return -1;
}
if (pid > 0) {
if (stdin_fd && stdin_fd[0] > -1) {
close(stdin_fd[0]);
}
if (stdout_fd > -1) {
close(stdout_fd);
}
if (waitpid(pid, &waitpid_status, WNOHANG) < 0) {
uwsgi_error("waitpid()");
return -1;
}
return pid;
}
uwsgi_close_all_sockets();
if (stdin_fd) {
close(stdin_fd[1]);
}
if (stdout_fd > -1 && stdout_fd != 1) {
if (dup2(stdout_fd, 1) < 0) {
uwsgi_error("dup2()");
exit(1);
}
}
if (stdin_fd && stdin_fd[0] > -1 && stdin_fd[0] != 0) {
if (dup2(stdin_fd[0], 0) < 0) {
uwsgi_error("dup2()");
exit(1);
}
}
if (setsid() < 0) {
uwsgi_error("setsid()");
exit(1);
}
argv[0] = "/bin/sh";
argv[1] = "-c";
argv[2] = command;
argv[3] = NULL;
execvp("/bin/sh", argv);
uwsgi_error("execvp()");
//never here
exit(1);
}
int *uwsgi_attach_fd(int fd, int *count_ptr, char *code, size_t code_len) {
struct msghdr msg;
ssize_t len;
char *id = NULL;
struct iovec iov;
struct cmsghdr *cmsg;
int *ret;
int i;
int count = *count_ptr;
void *msg_control = uwsgi_malloc(CMSG_SPACE(sizeof(int) * count));
memset(msg_control, 0, CMSG_SPACE(sizeof(int) * count));
if (code && code_len > 0) {
// allocate space for code and num_sockets
id = uwsgi_malloc(code_len + sizeof(int));
memset(id, 0, code_len);
iov.iov_len = code_len + sizeof(int);
}
iov.iov_base = id;
memset(&msg, 0, sizeof(msg));
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_control = msg_control;
msg.msg_controllen = CMSG_SPACE(sizeof(int) * count);
msg.msg_flags = 0;
len = recvmsg(fd, &msg, 0);
if (len <= 0) {
uwsgi_error("recvmsg()");
return NULL;
}
if (code && code_len > 0) {
if (uwsgi_strncmp(id, code_len, code, code_len)) {
return NULL;
}
if ((size_t) len == code_len + sizeof(int)) {
memcpy(&i, id + code_len, sizeof(int));
if (i > count) {
*count_ptr = i;
free(msg_control);
free(id);
return NULL;
}
}
}
cmsg = CMSG_FIRSTHDR(&msg);
if (!cmsg)
return NULL;
if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
return NULL;
}
if ((size_t) (cmsg->cmsg_len - ((char *) CMSG_DATA(cmsg) - (char *) cmsg)) > (size_t) (sizeof(int) * (count + 1))) {
uwsgi_log("not enough space for sockets data, consider increasing it\n");
return NULL;
}
ret = uwsgi_malloc(sizeof(int) * (count + 1));
for (i = 0; i < count + 1; i++) {
ret[i] = -1;
}
memcpy(ret, CMSG_DATA(cmsg), cmsg->cmsg_len - ((char *) CMSG_DATA(cmsg) - (char *) cmsg));
free(msg_control);
if (code && code_len > 0) {
free(id);
}
return ret;
}
int uwsgi_endswith(char *str1, char *str2) {
size_t i;
size_t str1len = strlen(str1);
size_t str2len = strlen(str2);
char *ptr;
if (str2len > str1len)
return 0;
ptr = (str1 + str1len) - str2len;
for (i = 0; i < str2len; i++) {
if (*ptr != str2[i])
return 0;
ptr++;
}
return 1;
}
void uwsgi_chown(char *filename, char *owner) {
uid_t new_uid = -1;
uid_t new_gid = -1;
struct group *new_group = NULL;
struct passwd *new_user = NULL;
char *colon = strchr(owner, ':');
if (colon) {
colon[0] = 0;
}
if (is_a_number(owner)) {
new_uid = atoi(owner);
}
else {
new_user = getpwnam(owner);
if (!new_user) {
uwsgi_log("unable to find user %s\n", owner);
exit(1);
}
new_uid = new_user->pw_uid;
}
if (colon) {
colon[0] = ':';
if (is_a_number(colon + 1)) {
new_gid = atoi(colon + 1);
}
else {
new_group = getgrnam(colon + 1);
if (!new_group) {
uwsgi_log("unable to find group %s\n", colon + 1);
exit(1);
}
new_gid = new_group->gr_gid;
}
}
if (chown(filename, new_uid, new_gid)) {
uwsgi_error("chown()");
exit(1);
}
}
char *uwsgi_get_binary_path(char *argvzero) {
#if defined(__linux__)
char *buf = uwsgi_calloc(PATH_MAX + 1);
ssize_t len = readlink("/proc/self/exe", buf, PATH_MAX);
if (len > 0) {
return buf;
}
free(buf);
#elif defined(__NetBSD__)
char *buf = uwsgi_calloc(PATH_MAX + 1);
ssize_t len = readlink("/proc/curproc/exe", buf, PATH_MAX);
if (len > 0) {
return buf;
}
if (realpath(argvzero, buf)) {
return buf;
}
free(buf);
#elif defined(__APPLE__)
char *buf = uwsgi_malloc(uwsgi.page_size);
uint32_t len = uwsgi.page_size;
if (_NSGetExecutablePath(buf, &len) == 0) {
// return only absolute path
char *newbuf = realpath(buf, NULL);
if (newbuf) {
free(buf);
return newbuf;
}
}
free(buf);
#elif defined(__sun__)
// do not free this value !!!
char *buf = (char *) getexecname();
if (buf) {
// return only absolute path
if (buf[0] == '/') {
return buf;
}
char *newbuf = uwsgi_malloc(PATH_MAX + 1);
if (realpath(buf, newbuf)) {
return newbuf;
}
}
#elif defined(__FreeBSD__)
char *buf = uwsgi_malloc(uwsgi.page_size);
size_t len = uwsgi.page_size;
int mib[4];
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_PATHNAME;
mib[3] = -1;
if (sysctl(mib, 4, buf, &len, NULL, 0) == 0) {
return buf;
}
free(buf);
#endif
return argvzero;
}
char *uwsgi_get_line(char *ptr, char *watermark, int *size) {
char *p = ptr;
int count = 0;
while (p < watermark) {
if (*p == '\n') {
*size = count;
return ptr + count;
}
count++;
p++;
}
return NULL;
}
void uwsgi_build_mime_dict(char *filename) {
int size = 0;
char *buf = uwsgi_open_and_read(filename, &size, 1, NULL);
char *watermark = buf + size;
int linesize = 0;
char *line = buf;
int i;
int type_size = 0;
int ext_start = 0;
int found;
int entries = 0;
uwsgi_log("building mime-types dictionary from file %s...", filename);
while (uwsgi_get_line(line, watermark, &linesize) != NULL) {
found = 0;
if (isalnum((int) line[0])) {
// get the type size
for (i = 0; i < linesize; i++) {
if (isblank((int) line[i])) {
type_size = i;
found = 1;
break;
}
}
if (!found) {
line += linesize + 1;
continue;
}
found = 0;
for (i = type_size; i < linesize; i++) {
if (!isblank((int) line[i])) {
ext_start = i;
found = 1;
break;
}
}
if (!found) {
line += linesize + 1;
continue;
}
char *current = line + ext_start;
int ext_size = 0;
for (i = ext_start; i < linesize; i++) {
if (isblank((int) line[i])) {
#ifdef UWSGI_DEBUG
uwsgi_log("%.*s %.*s\n", ext_size, current, type_size, line);
#endif
uwsgi_dyn_dict_new(&uwsgi.mimetypes, current, ext_size, line, type_size);
entries++;
ext_size = 0;
current = NULL;
continue;
}
else if (current == NULL) {
current = line + i;
}
ext_size++;
}
if (current && ext_size > 1) {
#ifdef UWSGI_DEBUG
uwsgi_log("%.*s %.*s\n", ext_size, current, type_size, line);
#endif
uwsgi_dyn_dict_new(&uwsgi.mimetypes, current, ext_size, line, type_size);
entries++;
}
}
line += linesize + 1;
}
uwsgi_log("%d entry found\n", entries);
}
#ifdef __linux__
struct uwsgi_unshare_id {
char *name;
int value;
};
static struct uwsgi_unshare_id uwsgi_unshare_list[] = {
#ifdef CLONE_FILES
{"files", CLONE_FILES},
#endif
#ifdef CLONE_FS
{"fs", CLONE_FS},
#endif
#ifdef CLONE_NEWIPC
{"ipc", CLONE_NEWIPC},
#endif
#ifdef CLONE_NEWNET
{"net", CLONE_NEWNET},
#endif
#ifdef CLONE_NEWPID
{"pid", CLONE_NEWPID},
#endif
#ifdef CLONE_NEWNS
{"ns", CLONE_NEWNS},
{"mount", CLONE_NEWNS},
#endif
#ifdef CLONE_SYSVSEM
{"sysvsem", CLONE_SYSVSEM},
#endif
#ifdef CLONE_NEWUTS
{"uts", CLONE_NEWUTS},
#endif
{NULL, -1}
};
static int uwsgi_get_unshare_id(char *name) {
struct uwsgi_unshare_id *uui = uwsgi_unshare_list;
while (uui->name) {
if (!strcmp(uui->name, name))
return uui->value;
uui++;
}
return -1;
}
void uwsgi_build_unshare(char *what) {
char *list = uwsgi_str(what);
char *p = strtok(list, ",");
while (p != NULL) {
int u_id = uwsgi_get_unshare_id(p);
if (u_id != -1) {
uwsgi.unshare |= u_id;
}
p = strtok(NULL, ",");
}
free(list);
}
#endif
#ifdef UWSGI_CAP
struct uwsgi_cap {
char *name;
cap_value_t value;
};
static struct uwsgi_cap uwsgi_cap_list[] = {
{"chown", CAP_CHOWN},
{"dac_override", CAP_DAC_OVERRIDE},
{"dac_read_search", CAP_DAC_READ_SEARCH},
{"fowner", CAP_FOWNER},
{"fsetid", CAP_FSETID},
{"kill", CAP_KILL},
{"setgid", CAP_SETGID},
{"setuid", CAP_SETUID},
{"setpcap", CAP_SETPCAP},
{"linux_immutable", CAP_LINUX_IMMUTABLE},
{"net_bind_service", CAP_NET_BIND_SERVICE},
{"net_broadcast", CAP_NET_BROADCAST},
{"net_admin", CAP_NET_ADMIN},
{"net_raw", CAP_NET_RAW},
{"ipc_lock", CAP_IPC_LOCK},
{"ipc_owner", CAP_IPC_OWNER},
{"sys_module", CAP_SYS_MODULE},
{"sys_rawio", CAP_SYS_RAWIO},
{"sys_chroot", CAP_SYS_CHROOT},
{"sys_ptrace", CAP_SYS_PTRACE},
{"sys_pacct", CAP_SYS_PACCT},
{"sys_admin", CAP_SYS_ADMIN},
{"sys_boot", CAP_SYS_BOOT},
{"sys_nice", CAP_SYS_NICE},
{"sys_resource", CAP_SYS_RESOURCE},
{"sys_time", CAP_SYS_TIME},
{"sys_tty_config", CAP_SYS_TTY_CONFIG},
{"mknod", CAP_MKNOD},
#ifdef CAP_LEASE
{"lease", CAP_LEASE},
#endif
#ifdef CAP_AUDIT_WRITE
{"audit_write", CAP_AUDIT_WRITE},
#endif
#ifdef CAP_AUDIT_CONTROL
{"audit_control", CAP_AUDIT_CONTROL},
#endif
#ifdef CAP_SETFCAP
{"setfcap", CAP_SETFCAP},
#endif
#ifdef CAP_MAC_OVERRIDE
{"mac_override", CAP_MAC_OVERRIDE},
#endif
#ifdef CAP_MAC_ADMIN
{"mac_admin", CAP_MAC_ADMIN},
#endif
#ifdef CAP_SYSLOG
{"syslog", CAP_SYSLOG},
#endif
#ifdef CAP_WAKE_ALARM
{"wake_alarm", CAP_WAKE_ALARM},
#endif
{NULL, -1}
};
static int uwsgi_get_cap_id(char *name) {
struct uwsgi_cap *ucl = uwsgi_cap_list;
while (ucl->name) {
if (!strcmp(ucl->name, name))
return ucl->value;
ucl++;
}
return -1;
}
void uwsgi_build_cap(char *what) {
int cap_id;
char *caps = uwsgi_str(what);
int pos = 0;
uwsgi.cap_count = 0;
char *p = strtok(caps, ",");
while (p != NULL) {
if (is_a_number(p)) {
uwsgi.cap_count++;
}
else {
cap_id = uwsgi_get_cap_id(p);
if (cap_id != -1) {
uwsgi.cap_count++;
}
}
p = strtok(NULL, ",");
}
free(caps);
uwsgi.cap = uwsgi_malloc(sizeof(cap_value_t) * uwsgi.cap_count);
caps = uwsgi_str(what);
p = strtok(caps, ",");
while (p != NULL) {
if (is_a_number(p)) {
cap_id = atoi(p);
}
else {
cap_id = uwsgi_get_cap_id(p);
}
if (cap_id != -1) {
uwsgi.cap[pos] = cap_id;
uwsgi_log("setting capability %s [%d]\n", p, cap_id);
pos++;
}
p = strtok(NULL, ",");
}
free(caps);
}
#endif
void uwsgi_apply_config_pass(char symbol, char *(*hook) (char *)) {
int i, j;
for (i = 0; i < uwsgi.exported_opts_cnt; i++) {
int has_symbol = 0;
int depth = 0;
char *magic_key = NULL;
char *magic_val = NULL;
if (uwsgi.exported_opts[i]->value && !uwsgi.exported_opts[i]->configured) {
for (j = 0; j < (int) strlen(uwsgi.exported_opts[i]->value); j++) {
if (uwsgi.exported_opts[i]->value[j] == symbol) {
has_symbol = 1;
}
else if (uwsgi.exported_opts[i]->value[j] == '(' && has_symbol == 1) {
has_symbol = 2;
depth = 0;
magic_key = uwsgi.exported_opts[i]->value + j + 1;
}
else if (has_symbol > 1) {
if (uwsgi.exported_opts[i]->value[j] == '(') {
has_symbol++;
depth++;
}
else if (uwsgi.exported_opts[i]->value[j] == ')') {
if (depth > 0) {
has_symbol++;
depth--;
continue;
}
if (has_symbol <= 2) {
magic_key = NULL;
has_symbol = 0;
continue;
}
#ifdef UWSGI_DEBUG
uwsgi_log("need to interpret the %.*s tag\n", has_symbol - 2, magic_key);
#endif
char *tmp_magic_key = uwsgi_concat2n(magic_key, has_symbol - 2, "", 0);
magic_val = hook(tmp_magic_key);
free(tmp_magic_key);
if (!magic_val) {
magic_key = NULL;
has_symbol = 0;
continue;
}
uwsgi.exported_opts[i]->value = uwsgi_concat4n(uwsgi.exported_opts[i]->value, (magic_key - 2) - uwsgi.exported_opts[i]->value, magic_val, strlen(magic_val), magic_key + (has_symbol - 1), strlen(magic_key + (has_symbol - 1)), "", 0);
#ifdef UWSGI_DEBUG
uwsgi_log("computed new value = %s\n", uwsgi.exported_opts[i]->value);
#endif
magic_key = NULL;
has_symbol = 0;
j = 0;
}
else {
has_symbol++;
}
}
else {
has_symbol = 0;
}
}
}
}
}
void uwsgi_set_processname(char *name) {
#if defined(__linux__) || defined(__sun__)
size_t amount = 0;
// prepare for strncat
*uwsgi.orig_argv[0] = 0;
if (uwsgi.procname_prefix) {
amount += strlen(uwsgi.procname_prefix);
if ((int) amount > uwsgi.max_procname - 1)
return;
strncat(uwsgi.orig_argv[0], uwsgi.procname_prefix, uwsgi.max_procname - (amount + 1));
}
amount += strlen(name);
if ((int) amount > uwsgi.max_procname - 1)
return;
strncat(uwsgi.orig_argv[0], name, (uwsgi.max_procname - amount + 1));
if (uwsgi.procname_append) {
amount += strlen(uwsgi.procname_append);
if ((int) amount > uwsgi.max_procname - 1)
return;
strncat(uwsgi.orig_argv[0], uwsgi.procname_append, uwsgi.max_procname - (amount + 1));
}
// fill with spaces...
memset(uwsgi.orig_argv[0] + amount + 1, ' ', uwsgi.max_procname - (amount));
// end with \0
memset(uwsgi.orig_argv[0] + amount + 1 + (uwsgi.max_procname - (amount)), '\0', 1);
#elif defined(__FreeBSD__) || defined(__NetBSD__)
if (uwsgi.procname_prefix) {
if (!uwsgi.procname_append) {
setproctitle("-%s%s", uwsgi.procname_prefix, name);
}
else {
setproctitle("-%s%s%s", uwsgi.procname_prefix, name, uwsgi.procname_append);
}
}
else if (uwsgi.procname_append) {
if (!uwsgi.procname_prefix) {
setproctitle("-%s%s", name, uwsgi.procname_append);
}
else {
setproctitle("-%s%s%s", uwsgi.procname_prefix, name, uwsgi.procname_append);
}
}
else {
setproctitle("-%s", name);
}
#endif
}
// this is a wrapper for fork restoring original argv
pid_t uwsgi_fork(char *name) {
pid_t pid = fork();
if (pid == 0) {
if (uwsgi.never_swap) {
if (mlockall(MCL_CURRENT | MCL_FUTURE)) {
uwsgi_error("mlockall()");
}
}
#if defined(__linux__) || defined(__sun__)
int i;
for (i = 0; i < uwsgi.argc; i++) {
strcpy(uwsgi.orig_argv[i], uwsgi.argv[i]);
}
#endif
if (uwsgi.auto_procname && name) {
if (uwsgi.procname) {
uwsgi_set_processname(uwsgi.procname);
}
else {
uwsgi_set_processname(name);
}
}
}
return pid;
}
void escape_shell_arg(char *src, size_t len, char *dst) {
size_t i;
char *ptr = dst;
for (i = 0; i < len; i++) {
if (strchr("&;`'\"|*?~<>^()[]{}$\\\n", src[i])) {
*ptr++ = '\\';
}
*ptr++ = src[i];
}
*ptr++ = 0;
}
void http_url_decode(char *buf, uint16_t * len, char *dst) {
uint16_t i;
int percent = 0;
char value[2];
size_t new_len = 0;
char *ptr = dst;
value[0] = '0';
value[1] = '0';
for (i = 0; i < *len; i++) {
if (buf[i] == '%') {
if (percent == 0) {
percent = 1;
}
else {
*ptr++ = '%';
new_len++;
percent = 0;
}
}
else {
if (percent == 1) {
value[0] = buf[i];
percent = 2;
}
else if (percent == 2) {
value[1] = buf[i];
*ptr++ = hex2num(value);
percent = 0;
new_len++;
}
else {
*ptr++ = buf[i];
new_len++;
}
}
}
*len = new_len;
}
char *uwsgi_get_var(struct wsgi_request *wsgi_req, char *key, uint16_t keylen, uint16_t * len) {
int i;
for (i = 0; i < wsgi_req->var_cnt; i += 2) {
if (!uwsgi_strncmp(key, keylen, wsgi_req->hvec[i].iov_base, wsgi_req->hvec[i].iov_len)) {
*len = wsgi_req->hvec[i + 1].iov_len;
return wsgi_req->hvec[i + 1].iov_base;
}
}
return NULL;
}
struct uwsgi_app *uwsgi_add_app(int id, uint8_t modifier1, char *mountpoint, int mountpoint_len, void *interpreter, void *callable) {
if (id > uwsgi.max_apps) {
uwsgi_log("FATAL ERROR: you cannot load more than %d apps in a worker\n", uwsgi.max_apps);
exit(1);
}
struct uwsgi_app *wi = &uwsgi_apps[id];
memset(wi, 0, sizeof(struct uwsgi_app));
wi->modifier1 = modifier1;
wi->mountpoint_len = mountpoint_len < 0xff ? mountpoint_len : (0xff - 1);
strncpy(wi->mountpoint, mountpoint, wi->mountpoint_len);
wi->interpreter = interpreter;
wi->callable = callable;
uwsgi_apps_cnt++;
// check if we need to emulate fork() COW
int i;
if (uwsgi.mywid == 0) {
for (i = 1; i <= uwsgi.numproc; i++) {
memcpy(&uwsgi.workers[i].apps[id], &uwsgi.workers[0].apps[id], sizeof(struct uwsgi_app));
uwsgi.workers[i].apps_cnt = uwsgi_apps_cnt;
}
}
return wi;
}
char *uwsgi_check_touches(struct uwsgi_string_list *touch_list) {
struct uwsgi_string_list *touch = touch_list;
while (touch) {
struct stat tr_st;
if (stat(touch->value, &tr_st)) {
uwsgi_log("unable to stat() %s, events will be triggered as soon as the file is created\n", touch->value);
touch->custom = 0;
}
else {
if (!touch->custom)
touch->custom = (uint64_t) tr_st.st_mtime;
if ((uint64_t) tr_st.st_mtime > touch->custom) {
#ifdef UWSGI_DEBUG
uwsgi_log("[uwsgi-check-touches] modification detected on %s: %llu -> %llu\n", touch->value, (unsigned long long) touch->custom, (unsigned long long) tr_st.st_mtime);
#endif
touch->custom = (uint64_t) tr_st.st_mtime;
return touch->value;
}
touch->custom = (uint64_t) tr_st.st_mtime;
}
touch = touch->next;
}
return NULL;
}
char *uwsgi_chomp(char *str) {
size_t i;
for (i = 0; i < strlen(str); i++) {
if (str[i] == '\r' || str[i] == '\n') {
str[i] = 0;
return str;
}
}
return str;
}
char *uwsgi_tmpname(char *base, char *id) {
char *template = uwsgi_concat3(base, "/", id);
if (mkstemp(template) < 0) {
free(template);
return NULL;
}
return template;
}
int uwsgi_file_to_string_list(char *filename, struct uwsgi_string_list **list) {
char line[1024];
FILE *fh = fopen(filename, "r");
if (fh) {
while (fgets(line, 1024, fh)) {
uwsgi_string_new_list(list, uwsgi_chomp(uwsgi_str(line)));
}
fclose(fh);
return 1;
}
uwsgi_error_open(filename);
return 0;
}
void uwsgi_setup_post_buffering() {
if (!uwsgi.post_buffering_bufsize)
uwsgi.post_buffering_bufsize = 8192;
if (uwsgi.post_buffering_bufsize < uwsgi.post_buffering) {
uwsgi.post_buffering_bufsize = uwsgi.post_buffering;
uwsgi_log("setting request body buffering size to %d bytes\n", uwsgi.post_buffering_bufsize);
}
}
void uwsgi_emulate_cow_for_apps(int id) {
int i;
// check if we need to emulate fork() COW
if (uwsgi.mywid == 0) {
for (i = 1; i <= uwsgi.numproc; i++) {
memcpy(&uwsgi.workers[i].apps[id], &uwsgi.workers[0].apps[id], sizeof(struct uwsgi_app));
uwsgi.workers[i].apps_cnt = uwsgi_apps_cnt;
}
}
}
void uwsgi_write_pidfile(char *pidfile_name) {
uwsgi_log("writing pidfile to %s\n", pidfile_name);
FILE *pidfile = fopen(pidfile_name, "w");
if (!pidfile) {
uwsgi_error_open(pidfile_name);
exit(1);
}
if (fprintf(pidfile, "%d\n", (int) getpid()) < 0) {
uwsgi_log("could not write pidfile.\n");
}
fclose(pidfile);
}
int uwsgi_manage_exception(char *type, char *value, char *repr) {
struct uwsgi_string_list *list = NULL;
// first manage non fatal case (like signals and alarm)....
if (uwsgi.reload_on_exception) {
return -1;
}
if (type) {
list = uwsgi.reload_on_exception_type;
while (list) {
if (!strcmp(list->value, type)) {
return -1;
}
list = list->next;
}
}
if (value) {
list = uwsgi.reload_on_exception_value;
while (list) {
if (!strcmp(list->value, value)) {
return -1;
}
list = list->next;
}
}
if (repr) {
list = uwsgi.reload_on_exception_repr;
while (list) {
if (!strcmp(list->value, repr)) {
return -1;
}
list = list->next;
}
}
return 0;
}
void uwsgi_protected_close(int fd) {
sigset_t mask, oset;
sigfillset(&mask);
if (sigprocmask(SIG_BLOCK, &mask, &oset)) {
uwsgi_error("sigprocmask()");
exit(1);
}
close(fd);
if (sigprocmask(SIG_SETMASK, &oset, NULL)) {
uwsgi_error("sigprocmask()");
exit(1);
}
}
ssize_t uwsgi_protected_read(int fd, void *buf, size_t len) {
sigset_t mask, oset;
sigfillset(&mask);
if (sigprocmask(SIG_BLOCK, &mask, &oset)) {
uwsgi_error("sigprocmask()");
exit(1);
}
ssize_t ret = read(fd, buf, len);
if (sigprocmask(SIG_SETMASK, &oset, NULL)) {
uwsgi_error("sigprocmask()");
exit(1);
}
return ret;
}
char *uwsgi_expand_path(char *dir, int dir_len, char *ptr) {
char src[PATH_MAX + 1];
memcpy(src, dir, dir_len);
src[dir_len] = 0;
char *dst = ptr;
if (!dst)
dst = uwsgi_malloc(PATH_MAX + 1);
if (!realpath(src, dst)) {
uwsgi_error_realpath(src);
if (!ptr)
free(dst);
return NULL;
}
return dst;
}
#ifdef UWSGI_SSL
/*
ssl additional datas are retrieved via indexes.
You can create an index with SSL_CTX_get_ex_new_index and
set data in it with SSL_CTX_set_ex_data
*/
void uwsgi_ssl_init(void) {
OPENSSL_config(NULL);
SSL_library_init();
SSL_load_error_strings();
OpenSSL_add_all_algorithms();
uwsgi.ssl_initialized = 1;
}
void uwsgi_ssl_info_cb(SSL const *ssl, int where, int ret) {
if (where & SSL_CB_HANDSHAKE_DONE) {
if (ssl->s3) {
ssl->s3->flags |= SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS;
}
}
}
int uwsgi_ssl_verify_callback(int ok, X509_STORE_CTX * x509_store) {
return 1;
}
SSL_CTX *uwsgi_ssl_new_server_context(char *name, char *crt, char *key, char *ciphers, char *client_ca) {
SSL_CTX *ctx = SSL_CTX_new(SSLv23_server_method());
if (!ctx) {
uwsgi_log("unable to initialize ssl context\n");
exit(1);
}
// this part is taken from nginx and stud, removing unneeded functionality
// stud (for me) has made the best choice on choosing DH approach
long ssloptions = SSL_OP_NO_SSLv2 | SSL_OP_ALL | SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION;
// disable compression (if possibile)
#ifdef SSL_OP_NO_COMPRESSION
ssloptions |= SSL_OP_NO_COMPRESSION;
#endif
SSL_CTX_set_options(ctx, ssloptions);
// release/reuse buffers as soon as possibile
#ifdef SSL_MODE_RELEASE_BUFFERS
SSL_CTX_set_mode(ctx, SSL_MODE_RELEASE_BUFFERS);
#endif
if (SSL_CTX_use_certificate_chain_file(ctx, crt) <= 0) {
uwsgi_log("unable to assign ssl certificate %s\n", crt);
exit(1);
}
// this part is based from stud
BIO *bio = BIO_new_file(crt, "r");
if (bio) {
DH *dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
BIO_free(bio);
if (dh) {
SSL_CTX_set_tmp_dh(ctx, dh);
DH_free(dh);
#if OPENSSL_VERSION_NUMBER >= 0x0090800fL
#ifndef OPENSSL_NO_ECDH
#ifdef NID_X9_62_prime256v1
EC_KEY *ecdh = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
SSL_CTX_set_tmp_ecdh(ctx, ecdh);
EC_KEY_free(ecdh);
#endif
#endif
#endif
}
}
if (SSL_CTX_use_PrivateKey_file(ctx, key, SSL_FILETYPE_PEM) <= 0) {
uwsgi_log("unable to assign key certificate %s\n", key);
exit(1);
}
// if ciphers are specified, prefer server ciphers
if (ciphers && strlen(ciphers) > 0) {
if (SSL_CTX_set_cipher_list(ctx, ciphers) == 0) {
uwsgi_log("unable to set ssl requested ciphers: %s\n", ciphers);
exit(1);
}
SSL_CTX_set_options(ctx, SSL_OP_CIPHER_SERVER_PREFERENCE);
}
// set session context (if possibile), this is required for client certificate authentication
if (name) {
SSL_CTX_set_session_id_context(ctx, (unsigned char *) name, strlen(name));
}
if (client_ca) {
if (client_ca[0] == '!') {
SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, uwsgi_ssl_verify_callback);
client_ca++;
}
else {
SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, uwsgi_ssl_verify_callback);
}
// in the future we should allow to set the verify depth
SSL_CTX_set_verify_depth(ctx, 1);
if (SSL_CTX_load_verify_locations(ctx, client_ca, NULL) == 0) {
uwsgi_log("unable to set ssl verify locations for: %s\n", client_ca);
exit(1);
}
STACK_OF(X509_NAME) * list = SSL_load_client_CA_file(client_ca);
if (!list) {
uwsgi_log("unable to load client CA certificate: %s\n", client_ca);
exit(1);
}
SSL_CTX_set_client_CA_list(ctx, list);
}
SSL_CTX_set_info_callback(ctx, uwsgi_ssl_info_cb);
// disable session caching by default
SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF);
/*
SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_SERVER);
#ifdef UWSGI_DEBUG
uwsgi_log("[uwsgi-ssl] initialized ssl session cache: %s\n", name);
#endif
//SSL_CTX_set_timeout
//SSL_CTX_sess_set_cache_size
}
*/
return ctx;
}
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;
}
char *uwsgi_sanitize_cert_filename(char *base, char *key, uint16_t keylen) {
uint16_t i;
char *filename = uwsgi_concat4n(base, strlen(base), "/", 1, key, keylen, ".pem\0", 5);
for (i = strlen(base) + 1; i < (strlen(base) + 1) + keylen; i++) {
if (filename[i] >= '0' && filename[i] <= '9')
continue;
if (filename[i] >= 'A' && filename[i] <= 'Z')
continue;
if (filename[i] >= 'a' && filename[i] <= 'z')
continue;
if (filename[i] == '.')
continue;
if (filename[i] == '-')
continue;
if (filename[i] == '_')
continue;
filename[i] = '_';
}
return filename;
}
#endif
ssize_t uwsgi_pipe(int src, int dst, int timeout) {
char buf[8192];
size_t written = -1;
ssize_t len;
for (;;) {
int ret = uwsgi_waitfd(src, timeout);
if (ret > 0) {
len = read(src, buf, 8192);
if (len == 0) {
return written;
}
else if (len < 0) {
uwsgi_error("read()");
return -1;
}
size_t remains = len;
while (remains > 0) {
int ret = uwsgi_waitfd_write(dst, timeout);
if (ret > 0) {
len = write(dst, buf, remains);
if (len > 0) {
remains -= len;
written += len;
}
else if (len == 0) {
return written;
}
else {
uwsgi_error("write()");
return -1;
}
}
else if (ret == 0) {
goto timeout;
}
else {
return -1;
}
}
}
else if (ret == 0) {
goto timeout;
}
else {
return -1;
}
}
return written;
timeout:
uwsgi_log("timeout while piping from %d to %d !!!\n", src, dst);
return -1;
}
ssize_t uwsgi_pipe_sized(int src, int dst, size_t required, int timeout) {
char buf[8192];
size_t written = 0;
ssize_t len;
while (written < required) {
int ret = uwsgi_waitfd(src, timeout);
if (ret > 0) {
len = read(src, buf, UMIN(8192, required - written));
if (len == 0) {
return written;
}
else if (len < 0) {
uwsgi_error("read()");
return -1;
}
size_t remains = len;
while (remains > 0) {
int ret = uwsgi_waitfd_write(dst, timeout);
if (ret > 0) {
len = write(dst, buf, remains);
if (len > 0) {
remains -= len;
written += len;
}
else if (len == 0) {
return written;
}
else {
uwsgi_error("write()");
return -1;
}
}
else if (ret == 0) {
goto timeout;
}
else {
return -1;
}
}
}
else if (ret == 0) {
goto timeout;
}
else {
return -1;
}
}
return written;
timeout:
uwsgi_log("timeout while piping from %d to %d !!!\n", src, dst);
return -1;
}
void uwsgi_set_cpu_affinity() {
char buf[4096];
int ret;
int pos = 0;
if (uwsgi.cpu_affinity) {
int base_cpu = (uwsgi.mywid - 1) * uwsgi.cpu_affinity;
if (base_cpu >= uwsgi.cpus) {
base_cpu = base_cpu % uwsgi.cpus;
}
ret = snprintf(buf, 4096, "mapping worker %d to CPUs:", uwsgi.mywid);
if (ret < 25) {
uwsgi_log("unable to initialize cpu affinity !!!\n");
exit(1);
}
pos += ret;
#ifdef __linux__
cpu_set_t cpuset;
#elif defined(__FreeBSD__)
cpuset_t cpuset;
#endif
#if defined(__linux__) || defined(__FreeBSD__)
CPU_ZERO(&cpuset);
int i;
for (i = 0; i < uwsgi.cpu_affinity; i++) {
if (base_cpu >= uwsgi.cpus)
base_cpu = 0;
CPU_SET(base_cpu, &cpuset);
ret = snprintf(buf + pos, 4096 - pos, " %d", base_cpu);
if (ret < 2) {
uwsgi_log("unable to initialize cpu affinity !!!\n");
exit(1);
}
pos += ret;
base_cpu++;
}
#endif
#ifdef __linux__
if (sched_setaffinity(0, sizeof(cpu_set_t), &cpuset)) {
uwsgi_error("sched_setaffinity()");
}
#elif defined(__FreeBSD__)
if (cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset)) {
uwsgi_error("cpuset_setaffinity");
}
#endif
uwsgi_log("%s\n", buf);
}
}
#ifdef UWSGI_ELF
#if defined(__linux__)
#include <elf.h>
#endif
char *uwsgi_elf_section(char *filename, char *s, size_t * len) {
struct stat st;
char *output = NULL;
int fd = open(filename, O_RDONLY);
if (fd < 0) {
uwsgi_error_open(filename);
return NULL;
}
if (fstat(fd, &st)) {
uwsgi_error("stat()");
close(fd);
return NULL;
}
if (st.st_size < EI_NIDENT) {
uwsgi_log("invalid elf file: %s\n", filename);
close(fd);
return NULL;
}
char *addr = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
if (addr == MAP_FAILED) {
uwsgi_error("mmap()");
close(fd);
return NULL;
}
if (addr[0] != ELFMAG0)
goto clear;
if (addr[1] != ELFMAG1)
goto clear;
if (addr[2] != ELFMAG2)
goto clear;
if (addr[3] != ELFMAG3)
goto clear;
if (addr[4] == ELFCLASS32) {
// elf header
Elf32_Ehdr *elfh = (Elf32_Ehdr *) addr;
// first section
Elf32_Shdr *sections = ((Elf32_Shdr *) (addr + elfh->e_shoff));
// number of sections
int ns = elfh->e_shnum;
// the names table
Elf32_Shdr *table = &sections[elfh->e_shstrndx];
// string table session pointer
char *names = addr + table->sh_offset;
Elf32_Shdr *ss = NULL;
int i;
for (i = 0; i < ns; i++) {
char *name = names + sections[i].sh_name;
if (!strcmp(name, s)) {
ss = &sections[i];
break;
}
}
if (ss) {
*len = ss->sh_size;
output = uwsgi_concat2n(addr + ss->sh_offset, ss->sh_size, "", 0);
}
}
else if (addr[4] == ELFCLASS64) {
// elf header
Elf64_Ehdr *elfh = (Elf64_Ehdr *) addr;
// first section
Elf64_Shdr *sections = ((Elf64_Shdr *) (addr + elfh->e_shoff));
// number of sections
int ns = elfh->e_shnum;
// the names table
Elf64_Shdr *table = &sections[elfh->e_shstrndx];
// string table session pointer
char *names = addr + table->sh_offset;
Elf64_Shdr *ss = NULL;
int i;
for (i = 0; i < ns; i++) {
char *name = names + sections[i].sh_name;
if (!strcmp(name, s)) {
ss = &sections[i];
break;
}
}
if (ss) {
*len = ss->sh_size;
output = uwsgi_concat2n(addr + ss->sh_offset, ss->sh_size, "", 0);
}
}
clear:
close(fd);
munmap(addr, st.st_size);
return output;
}
#endif
static void *uwsgi_thread_run(void *arg) {
struct uwsgi_thread *ut = (struct uwsgi_thread *) arg;
// block all signals
sigset_t smask;
sigfillset(&smask);
pthread_sigmask(SIG_BLOCK, &smask, NULL);
ut->queue = event_queue_init();
event_queue_add_fd_read(ut->queue, ut->pipe[1]);
ut->func(ut);
return NULL;
}
struct uwsgi_thread *uwsgi_thread_new(void (*func) (struct uwsgi_thread *)) {
struct uwsgi_thread *ut = uwsgi_malloc(sizeof(struct uwsgi_thread));
#if defined(SOCK_SEQPACKET) && defined(__linux__)
if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, ut->pipe)) {
#else
if (socketpair(AF_UNIX, SOCK_DGRAM, 0, ut->pipe)) {
#endif
free(ut);
return NULL;
}
uwsgi_socket_nb(ut->pipe[0]);
uwsgi_socket_nb(ut->pipe[1]);
ut->func = func;
pthread_attr_init(&ut->tattr);
pthread_attr_setdetachstate(&ut->tattr, PTHREAD_CREATE_DETACHED);
// 512K should be enough...
pthread_attr_setstacksize(&ut->tattr, 512 * 1024);
if (pthread_create(&ut->tid, &ut->tattr, uwsgi_thread_run, ut)) {
uwsgi_error("pthread_create()");
goto error;
}
return ut;
error:
close(ut->pipe[0]);
close(ut->pipe[1]);
free(ut);
return NULL;
}
// evaluate a math expression
#ifdef UWSGI_MATHEVAL
double uwsgi_matheval(char *expr) {
#ifdef UWSGI_DEBUG
uwsgi_log("matheval expr = %s\n", expr);
#endif
double ret = 0.0;
void *e = evaluator_create(expr);
if (!e)
return ret;
ret = evaluator_evaluate(e, 0, NULL, NULL);
evaluator_destroy(e);
return ret;
}
char *uwsgi_matheval_str(char *expr) {
double ret = uwsgi_matheval(expr);
return uwsgi_num2str((int) ret);
}
#endif
int uwsgi_kvlist_parse(char *src, size_t len, char list_separator, char kv_separator, ...) {
size_t i;
va_list ap;
struct uwsgi_string_list *itemlist = NULL;
char *buf = uwsgi_calloc(len + 1);
// ok let's start splitting the string
int escaped = 0;
char *base = buf;
char *ptr = buf;
for (i = 0; i < len; i++) {
if (src[i] == list_separator && !escaped) {
*ptr++ = 0;
uwsgi_string_new_list(&itemlist, base);
base = ptr;
}
else if (src[i] == '\\' && !escaped) {
escaped = 1;
}
else if (escaped) {
escaped = 0;
}
else {
*ptr++ = src[i];
}
}
if (ptr > base) {
uwsgi_string_new_list(&itemlist, base);
}
struct uwsgi_string_list *usl = itemlist;
while (usl) {
len = strlen(usl->value);
char *item_buf = uwsgi_calloc(len + 1);
base = item_buf;
ptr = item_buf;
escaped = 0;
for (i = 0; i < len; i++) {
if (usl->value[i] == kv_separator && !escaped) {
*ptr++ = 0;
va_start(ap, kv_separator);
for (;;) {
char *p = va_arg(ap, char *);
if (!p)
break;
char **pp = va_arg(ap, char **);
if (!pp)
break;
if (!strcmp(p, base)) {
*pp = uwsgi_str(usl->value + i + 1);
}
}
va_end(ap);
base = ptr;
break;
}
else if (usl->value[i] == '\\' && !escaped) {
escaped = 1;
}
else if (escaped) {
escaped = 0;
}
else {
*ptr++ = usl->value[i];
}
}
free(item_buf);
usl = usl->next;
}
free(buf);
return 0;
}
int uwsgi_send_http_stats(int fd) {
char buf[4096];
int ret = uwsgi_waitfd(fd, uwsgi.shared->options[UWSGI_OPTION_SOCKET_TIMEOUT]);
if (ret <= 0)
return -1;
if (read(fd, buf, 4096) <= 0)
return -1;
struct uwsgi_buffer *ub = uwsgi_buffer_new(uwsgi.page_size);
if (!ub)
return -1;
if (uwsgi_buffer_append(ub, "HTTP/1.0 200 OK\r\n", 17))
goto error;
if (uwsgi_buffer_append(ub, "Connection: close\r\n", 19))
goto error;
if (uwsgi_buffer_append(ub, "Access-Control-Allow-Origin: *\r\n", 32))
goto error;
if (uwsgi_buffer_append(ub, "Content-Type: application/json\r\n", 32))
goto error;
if (uwsgi_buffer_append(ub, "\r\n", 2))
goto error;
if (uwsgi_buffer_send(ub, fd))
goto error;
uwsgi_buffer_destroy(ub);
return 0;
error:
uwsgi_buffer_destroy(ub);
return -1;
}
void uwsgi_simple_set_status(struct wsgi_request *wsgi_req, int status) {
wsgi_req->status = status;
}
void uwsgi_simple_inc_headers(struct wsgi_request *wsgi_req) {
wsgi_req->header_cnt++;
}
void uwsgi_simple_response_write(struct wsgi_request *wsgi_req, char *buf, size_t len) {
wsgi_req->response_size += wsgi_req->socket->proto_write(wsgi_req, buf, len);
}
void uwsgi_simple_response_write_header(struct wsgi_request *wsgi_req, char *buf, size_t len) {
wsgi_req->headers_size += wsgi_req->socket->proto_write_header(wsgi_req, buf, len);
}
ssize_t uwsgi_simple_request_read(struct wsgi_request *wsgi_req, char *buf, size_t len) {
if (wsgi_req->post_cl == 0)
return 0;
if ((size_t) wsgi_req->post_pos >= wsgi_req->post_cl)
return 0;
size_t remains = wsgi_req->post_cl - wsgi_req->post_pos;
remains = UMIN(len, remains);
int fd = -1;
if (wsgi_req->body_as_file) {
fd = fileno((FILE *) wsgi_req->async_post);
}
else if (uwsgi.post_buffering > 0) {
if (wsgi_req->post_cl > (size_t) uwsgi.post_buffering) {
fd = fileno((FILE *) wsgi_req->async_post);
}
}
else {
fd = wsgi_req->poll.fd;
}
// data in memory ?
if (fd == -1) {
memcpy(buf, wsgi_req->post_buffering_buf + wsgi_req->post_buffering_read, remains);
wsgi_req->post_buffering_read += remains;
wsgi_req->post_pos += remains;
return remains;
}
if (uwsgi_waitfd(fd, uwsgi.shared->options[UWSGI_OPTION_SOCKET_TIMEOUT]) <= 0) {
uwsgi_log("error waiting for request body");
return -1;
}
ssize_t rlen = read(fd, buf, remains);
if (rlen < 0) {
uwsgi_error("error reading request body:");
return -1;
}
wsgi_req->post_pos += rlen;
return rlen;
}
int uwsgi_plugin_modifier1(char *plugin) {
int ret = -1;
char *symbol_name = uwsgi_concat2(plugin, "_plugin");
struct uwsgi_plugin *up = dlsym(RTLD_DEFAULT, symbol_name);
if (!up)
goto end;
ret = up->modifier1;
end:
free(symbol_name);
return ret;
}
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