void
ngx_pipe_do_rollback(ngx_cycle_t *cycle, ngx_pipe_rollback_conf_t *rbcf)
{
int fd;
struct flock lock;
int ret;
ngx_int_t i;
ngx_file_info_t sb;
ngx_int_t need_do = 0;
fd = ngx_open_file(rbcf->logname, NGX_FILE_RDWR, NGX_FILE_OPEN, 0);
if (fd < 0) {
//open lock file failed just no need rollback
return;
}
lock.l_type = F_WRLCK;
lock.l_whence = SEEK_SET;
lock.l_start = 0;
lock.l_len = 0;
ret = fcntl(fd, F_SETLKW, &lock);
if (ret < 0) {
ngx_close_file(fd);
//lock failed just no need rollback
return;
}
//check time
if (rbcf->interval >= 0) {
if (ngx_file_info(rbcf->backup[0], &sb) == -1) {
need_do = 1;
ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
"need rollback [%s]: cannot open backup", rbcf->logname);
} else if (sb.st_ctime / rbcf->interval < ngx_time() / rbcf->interval) {
need_do = 1;
ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
"need rollback [%s]: time on [%d] [%d]",
rbcf->logname, sb.st_ctime, rbcf->time_now);
} else {
ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
"no need rollback [%s]: time not on [%d] [%d]",
rbcf->logname, sb.st_ctime, rbcf->time_now);
}
} else {
ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
"no need check rollback [%s] time: no interval", rbcf->logname);
}
//check size
if (rbcf->log_max_size > 0) {
if (ngx_file_info(rbcf->logname, &sb) == 0 && (sb.st_size >= rbcf->log_max_size)) {
need_do = 1;
ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
"need rollback [%s]: size on [%d]", rbcf->logname, sb.st_size);
} else {
ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
"no need rollback [%s]: size not on", rbcf->logname);
}
} else {
ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
"no need check rollback [%s] size: no max size", rbcf->logname);
}
if (need_do) {
for (i = 1; i < rbcf->backup_num; i++) {
ngx_rename_file(rbcf->backup[rbcf->backup_num - i - 1],
rbcf->backup[rbcf->backup_num - i]);
}
if (ngx_rename_file(rbcf->logname, rbcf->backup[0]) < 0) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"rname %s to %s failed", rbcf->logname, rbcf->backup[0]);
} else {
ngx_log_error(NGX_LOG_WARN, cycle->log, 0,
"rollback [%s] success", rbcf->logname);
}
}
ngx_close_file(fd);
}
static ngx_int_t ngx_http_filetransfer_handler2(ngx_http_request_t *r)
{
//必须是GET或者HEAD方法，否则返回405 Not Allowed
if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
return NGX_HTTP_NOT_ALLOWED;
}
//丢弃请求中的包体
ngx_int_t rc = ngx_http_discard_request_body(r);
if (rc != NGX_OK) {
return rc;
}
ngx_str_t type = ngx_string("text/html");
//返回的包体内容
//设置返回状态码
r->headers_out.status = NGX_HTTP_OK;
//响应包是有包体内容的，需要设置Content-Length长度
//设置Content-Type
r->headers_out.content_type = type;
//发送HTTP头部
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
return rc;
}
ngx_buf_t *b;
b = ngx_palloc(r->pool, sizeof(ngx_buf_t));
b->in_file=1;
u_char* filename = (u_char*)"/usr/local/nginx/html/Google.html";
b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
b->file->fd = ngx_open_file(filename, NGX_FILE_RDONLY|NGX_FILE_NONBLOCK, NGX_FILE_OPEN, 0);
b->file->log = r->connection->log;
b->file->name.data = filename;
b->file->name.len = sizeof(filename)-1;
if (b->file->fd <= 0)
{
return NGX_HTTP_NOT_FOUND;
}
if (ngx_file_info(filename, &b->file->info) == NGX_FILE_ERROR)
{
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
r->headers_out.content_length_n = b->file->info.st_size;
b->file_pos = 0;
b->file_last = b->file->info.st_size;
ngx_pool_cleanup_t* cln = ngx_pool_cleanup_add(r->pool, sizeof(ngx_pool_cleanup_file_t));
if (cln == NULL) {
return NGX_ERROR;
}
cln->handler = ngx_pool_cleanup_file;
ngx_pool_cleanup_file_t *clnclnf = cln->data;
clnclnf->fd = b->file->fd;
clnclnf->name = b->file->name.data;
clnclnf->log = r->pool->log;
//构造发送时的ngx_chain_t结构体
ngx_chain_t out;
//赋值ngx_buf_t
out.buf = b;
//设置next为NULL
out.next = NULL;
return ngx_http_output_filter(r, &out);
}
// 初始化日志
ngx_log_t *
ngx_log_init(u_char *prefix)
{
u_char *p, *name;
size_t nlen, plen;
// 初始化为notice级别，即只有warn,error等才能记录日志
ngx_log.file = &ngx_log_file;
ngx_log.log_level = NGX_LOG_NOTICE;
name = (u_char *) NGX_ERROR_LOG_PATH;
/*
* we use ngx_strlen() here since BCC warns about
* condition is always false and unreachable code
*/
nlen = ngx_strlen(name);
if (nlen == 0) {
ngx_log_file.fd = ngx_stderr;
return &ngx_log;
}
p = NULL;
#if (NGX_WIN32)
if (name[1] != ':') {
#else
if (name[0] != '/') {
#endif
if (prefix) {
plen = ngx_strlen(prefix);
} else {
#ifdef NGX_PREFIX
prefix = (u_char *) NGX_PREFIX;
plen = ngx_strlen(prefix);
#else
plen = 0;
#endif
}
if (plen) {
name = malloc(plen + nlen + 2);
if (name == NULL) {
return NULL;
}
p = ngx_cpymem(name, prefix, plen);
if (!ngx_path_separator(*(p - 1))) {
*p++ = '/';
}
ngx_cpystrn(p, (u_char *) NGX_ERROR_LOG_PATH, nlen + 1);
p = name;
}
}
ngx_log_file.fd = ngx_open_file(name, NGX_FILE_APPEND,
NGX_FILE_CREATE_OR_OPEN,
NGX_FILE_DEFAULT_ACCESS);
if (ngx_log_file.fd == NGX_INVALID_FILE) {
ngx_log_stderr(ngx_errno,
"[alert] could not open error log file: "
ngx_open_file_n " \"%s\" failed", name);
#if (NGX_WIN32)
ngx_event_log(ngx_errno,
"could not open error log file: "
ngx_open_file_n " \"%s\" failed", name);
#endif
ngx_log_file.fd = ngx_stderr;
}
if (p) {
ngx_free(p);
}
return &ngx_log;
}
ngx_int_t
ngx_log_open_default(ngx_cycle_t *cycle)
{
ngx_log_t *log;
static ngx_str_t error_log = ngx_string(NGX_ERROR_LOG_PATH);
if (ngx_log_get_file_log(&cycle->new_log) != NULL) {
return NGX_OK;
}
if (cycle->new_log.log_level != 0) {
/* there are some error logs, but no files */
log = ngx_pcalloc(cycle->pool, sizeof(ngx_log_t));
if (log == NULL) {
return NGX_ERROR;
}
} else {
/* no error logs at all */
log = &cycle->new_log;
}
log->log_level = NGX_LOG_ERR;
log->file = ngx_conf_open_file(cycle, &error_log);
if (log->file == NULL) {
return NGX_ERROR;
}
if (log != &cycle->new_log) {
ngx_log_insert(&cycle->new_log, log);
}
return NGX_OK;
}
void
ngx_reopen_files(ngx_cycle_t *cycle, ngx_uid_t user)
{
ngx_fd_t fd;
ngx_uint_t i;
ngx_list_part_t *part;
ngx_open_file_t *file;
part = &cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].name.len == 0) {
continue;
}
if (file[i].flush) {
file[i].flush(&file[i], cycle->log);
}
fd = ngx_open_file(file[i].name.data, NGX_FILE_APPEND,
NGX_FILE_CREATE_OR_OPEN, NGX_FILE_DEFAULT_ACCESS);
ngx_log_debug3(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"reopen file \"%s\", old:%d new:%d",
file[i].name.data, file[i].fd, fd);
if (fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
ngx_open_file_n " \"%s\" failed", file[i].name.data);
continue;
}
#if !(NGX_WIN32)
if (user != (ngx_uid_t) NGX_CONF_UNSET_UINT) {
ngx_file_info_t fi;
if (ngx_file_info((const char *) file[i].name.data, &fi)
== NGX_FILE_ERROR)
{
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
ngx_file_info_n " \"%s\" failed",
file[i].name.data);
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
}
if (fi.st_uid != user) {
if (chown((const char *) file[i].name.data, user, -1) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"chown(\"%s\", %d) failed",
file[i].name.data, user);
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
}
}
if ((fi.st_mode & (S_IRUSR|S_IWUSR)) != (S_IRUSR|S_IWUSR)) {
fi.st_mode |= (S_IRUSR|S_IWUSR);
if (chmod((const char *) file[i].name.data, fi.st_mode) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"chmod() \"%s\" failed", file[i].name.data);
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
}
}
}
if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"fcntl(FD_CLOEXEC) \"%s\" failed",
file[i].name.data);
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
continue;
}
#endif
if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
file[i].fd = fd;
}
(void) ngx_log_redirect_stderr(cycle);
}
ngx_int_t
ngx_copy_file(u_char *from, u_char *to, ngx_copy_file_t *cf)
{
char *buf;
off_t size;
size_t len;
ssize_t n;
ngx_fd_t fd, nfd;
ngx_int_t rc;
ngx_file_info_t fi;
rc = NGX_ERROR;
buf = NULL;
nfd = NGX_INVALID_FILE;
fd = ngx_open_file(from, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_CRIT, cf->log, ngx_errno,
ngx_open_file_n " \"%s\" failed", from);
goto failed;
}
if (cf->size != -1) {
size = cf->size;
} else {
if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
ngx_fd_info_n " \"%s\" failed", from);
goto failed;
}
size = ngx_file_size(&fi);
}
len = cf->buf_size ? cf->buf_size : 65536;
if ((off_t) len > size) {
len = (size_t) size;
}
buf = ngx_alloc(len, cf->log);
if (buf == NULL) {
goto failed;
}
nfd = ngx_open_file(to, NGX_FILE_WRONLY, NGX_FILE_CREATE_OR_OPEN,
cf->access);
if (nfd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_CRIT, cf->log, ngx_errno,
ngx_open_file_n " \"%s\" failed", to);
goto failed;
}
while (size > 0) {
if ((off_t) len > size) {
len = (size_t) size;
}
n = ngx_read_fd(fd, buf, len);
if (n == -1) {
ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
ngx_read_fd_n " \"%s\" failed", from);
goto failed;
}
if ((size_t) n != len) {
ngx_log_error(NGX_LOG_ALERT, cf->log, 0,
ngx_read_fd_n " has read only %z of %O from %s",
n, size, from);
goto failed;
}
n = ngx_write_fd(nfd, buf, len);
if (n == -1) {
ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
ngx_write_fd_n " \"%s\" failed", to);
goto failed;
}
if ((size_t) n != len) {
ngx_log_error(NGX_LOG_ALERT, cf->log, 0,
ngx_write_fd_n " has written only %z of %O to %s",
n, size, to);
goto failed;
}
size -= n;
}
if (cf->time != -1) {
if (ngx_set_file_time(to, nfd, cf->time) != NGX_OK) {
ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
ngx_set_file_time_n " \"%s\" failed", to);
goto failed;
}
}
rc = NGX_OK;
failed:
if (nfd != NGX_INVALID_FILE) {
if (ngx_close_file(nfd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
ngx_close_file_n " \"%s\" failed", to);
}
}
if (fd != NGX_INVALID_FILE) {
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
ngx_close_file_n " \"%s\" failed", from);
}
}
if (buf) {
ngx_free(buf);
}
return rc;
}
ngx_int_t ngx_http_small_light_imlib2_process(ngx_http_request_t *r, ngx_http_small_light_ctx_t *ctx)
{
ngx_http_small_light_imlib2_ctx_t *ictx;
ngx_http_small_light_image_size_t sz;
Imlib_Image image_org, image_dst, image_tmp;
Imlib_Load_Error err;
ngx_file_info_t fi;
ngx_fd_t fd;
char *filename, *sharpen, *blur, *of, *buf;
void *data;
int w, h, radius, orientation;
double iw, ih, q;
ngx_int_t type;
const char *ext;
ssize_t size;
ictx = (ngx_http_small_light_imlib2_ctx_t *)ctx->ictx;
filename = (char *)ictx->tf->file.name.data;
/* adjust image size */
ngx_http_small_light_calc_image_size(r, ctx, &sz, 10000.0, 10000.0);
if (sz.jpeghint_flg != 0 &&
sz.dw != NGX_HTTP_SMALL_LIGHT_COORD_INVALID_VALUE &&
sz.dh != NGX_HTTP_SMALL_LIGHT_COORD_INVALID_VALUE)
{
if (ngx_http_small_light_load_jpeg((void**)&data, &w, &h, r, filename, sz.dw, sz.dh) != NGX_OK) {
image_org = imlib_load_image_immediately_without_cache(filename);
if (image_org == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to load image %s:%d",
__FUNCTION__,
__LINE__);
return NGX_ERROR;
}
} else {
image_org = imlib_create_image_using_data(w, h, data);
}
} else {
image_org = imlib_load_image_immediately_without_cache(filename);
if (image_org == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to load image %s:%d",
__FUNCTION__,
__LINE__);
return NGX_ERROR;
}
}
/* rotate. */
if (sz.angle) {
orientation = 0;
switch (sz.angle) {
case 90:
orientation = 1;
break;
case 180:
orientation = 2;
break;
case 270:
orientation = 3;
break;
default:
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"image not rotated. 'angle'(%ui) must be 90 or 180 or 270. %s:%d",
sz.angle,
__FUNCTION__,
__LINE__);
break;
}
imlib_context_set_image(image_org);
imlib_image_orientate(orientation);
}
/* calc size. */
imlib_context_set_image(image_org);
iw = (double)imlib_image_get_width();
ih = (double)imlib_image_get_height();
ngx_http_small_light_calc_image_size(r, ctx, &sz, iw, ih);
/* pass through. */
if (sz.pt_flg != 0) {
ctx->of = ctx->inf;
return NGX_OK;
}
/* adjust destination size */
if (sz.dw == NGX_HTTP_SMALL_LIGHT_COORD_INVALID_VALUE) {
sz.dw = sz.sw;
}
if (sz.dh == NGX_HTTP_SMALL_LIGHT_COORD_INVALID_VALUE) {
sz.dh = sz.sh;
}
/* crop, scale. */
if (sz.scale_flg != 0) {
image_dst = imlib_create_cropped_scaled_image((int)sz.sx, (int)sz.sy, (int)sz.sw, (int)sz.sh, (int)sz.dw, (int)sz.dh);
imlib_context_set_image(image_org);
imlib_free_image();
} else {
image_dst = image_org;
}
if (image_dst == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"imlib_create_cropped_scaled_image failed. %s:%d",
__FUNCTION__,
__LINE__);
return NGX_ERROR;
}
/* create canvas then draw image to the canvas. */
if (sz.cw > 0.0 && sz.ch > 0.0) {
image_tmp = imlib_create_image(sz.cw, sz.ch);
if (image_tmp == NULL) {
imlib_context_set_image(image_dst);
imlib_free_image();
return NGX_ERROR;
}
imlib_context_set_image(image_tmp);
imlib_context_set_color(sz.cc.r, sz.cc.g, sz.cc.b, sz.cc.a);
imlib_image_fill_rectangle(0, 0, sz.cw, sz.ch);
ngx_http_small_light_adjust_canvas_image_offset(&sz);
imlib_blend_image_onto_image(image_dst, 255, 0, 0,
(int)sz.dw, (int)sz.dh, (int)sz.dx, (int)sz.dy, (int)sz.dw, (int)sz.dh);
imlib_context_set_image(image_dst);
imlib_free_image();
image_dst = image_tmp;
}
/* effects. */
sharpen = NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "sharpen");
if (ngx_strlen(sharpen) > 0) {
radius = ngx_http_small_light_parse_int(sharpen);
if (radius > 0 && radius <= (int)ctx->radius_max) {
imlib_context_set_image(image_dst);
imlib_image_sharpen(radius);
} else {
ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
"As sharpen geometry is out of range, ignored. %s:%d",
__FUNCTION__,
__LINE__);
}
}
blur = NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "blur");
if (ngx_strlen(blur) > 0) {
radius = ngx_http_small_light_parse_int(blur);
if (radius > 0 && radius <= (int)ctx->radius_max) {
imlib_context_set_image(image_dst);
imlib_image_blur(radius);
} else {
ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
"As blur geometry is out of range, ignored. %s:%d",
__FUNCTION__,
__LINE__);
}
}
/* border. */
if (sz.bw > 0.0 || sz.bh > 0.0) {
imlib_context_set_color(sz.bc.r, sz.bc.g, sz.bc.b, sz.bc.a);
imlib_context_set_image(image_dst);
if (sz.cw > 0.0 && sz.ch > 0.0) {
imlib_image_fill_rectangle(0, 0, sz.cw, sz.bh);
imlib_image_fill_rectangle(0, 0, sz.bw, sz.ch);
imlib_image_fill_rectangle(0, sz.ch - sz.bh, sz.cw, sz.bh);
imlib_image_fill_rectangle(sz.cw - sz.bw, 0, sz.bw, sz.ch);
} else {
imlib_image_fill_rectangle(0, 0, sz.dw, sz.bh);
imlib_image_fill_rectangle(0, 0, sz.bw, sz.ch);
imlib_image_fill_rectangle(0, sz.dh - sz.bh, sz.dw, sz.bh);
imlib_image_fill_rectangle(sz.dw - sz.bw, 0, sz.bw, sz.dh);
}
}
/* set params. */
imlib_context_set_image(image_dst);
q = ngx_http_small_light_parse_double(NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "q"));
if (q > 0.0) {
imlib_image_attach_data_value("quality", NULL, q, NULL);
}
of = NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "of");
if (ngx_strlen(of) > 0) {
type = ngx_http_small_light_type(of);
if (type == NGX_HTTP_SMALL_LIGHT_IMAGE_NONE) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"of is invalid(%s) %s:%d",
of,
__FUNCTION__,
__LINE__);
of = (char *)ngx_http_small_light_image_exts[ictx->type - 1];
} else if (type == NGX_HTTP_SMALL_LIGHT_IMAGE_WEBP) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"WebP is not supported %s:%d",
__FUNCTION__,
__LINE__);
of = (char *)ngx_http_small_light_image_exts[ictx->type - 1];
} else {
ictx->type = type;
}
imlib_image_set_format(of);
ctx->of = ngx_http_small_light_image_types[ictx->type - 1];
} else {
ext = ngx_http_small_light_image_exts[ictx->type - 1];
imlib_image_set_format(ext);
ctx->of = ctx->inf;
}
/* save image. */
imlib_save_image_with_error_return(filename, &err);
imlib_free_image();
/* check error. */
if (err != IMLIB_LOAD_ERROR_NONE) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to imlib_save_error %s:%d",
__FUNCTION__,
__LINE__);
return NGX_ERROR;
}
if (ngx_file_info(filename, &fi) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to ngx_file_info %s:%d",
__FUNCTION__,
__LINE__);
return NGX_ERROR;
}
fd = ngx_open_file(filename, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to open fd %s:%d",
__FUNCTION__,
__LINE__);
return NGX_ERROR;
}
if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to ngx_fd_info %s:%d",
__FUNCTION__,
__LINE__);
ngx_close_file(fd);
return NGX_ERROR;
}
buf = ngx_palloc(r->pool, ngx_file_size(&fi));
if (buf == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to allocate memory from r->pool %s:%d",
__FUNCTION__,
__LINE__);
ngx_close_file(fd);
return NGX_ERROR;
}
size = ngx_read_fd(fd, buf, ngx_file_size(&fi));
if (size == -1) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to ngx_read_fd %s:%d",
__FUNCTION__,
__LINE__);
ngx_close_file(fd);
return NGX_ERROR;
}
if ((size_t)size > ctx->content_length) {
ctx->content = ngx_palloc(r->pool, size);
if (ctx->content == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to allocate memory from r->pool %s:%d",
__FUNCTION__,
__LINE__);
ngx_close_file(fd);
return NGX_ERROR;
}
}
ngx_memcpy(ctx->content, buf, size);
ngx_close_file(fd);
ctx->content_length = size;
return NGX_OK;
}
//http://blog.csdn.net/lengzijian/article/details/7575813
ngx_cycle_t *
ngx_init_cycle(ngx_cycle_t *old_cycle)
{
void *rv;
char **senv, **env;
ngx_uint_t i, n;
ngx_log_t *log;
ngx_time_t *tp;
ngx_conf_t conf;
ngx_pool_t *pool;
ngx_cycle_t *cycle, **old;
ngx_shm_zone_t *shm_zone, *oshm_zone;
ngx_list_part_t *part, *opart;
ngx_open_file_t *file;
ngx_listening_t *ls, *nls;
ngx_core_conf_t *ccf, *old_ccf;
ngx_core_module_t *module;
char hostname[NGX_MAXHOSTNAMELEN];
ngx_timezone_update();
/* force localtime update with a new timezone */
tp = ngx_timeofday();
tp->sec = 0;
ngx_time_update();
log = old_cycle->log;
pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log);
if (pool == NULL) {
return NULL;
}
pool->log = log;
cycle = ngx_pcalloc(pool, sizeof(ngx_cycle_t));
if (cycle == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->pool = pool;
cycle->log = log;
cycle->old_cycle = old_cycle;
cycle->conf_prefix.len = old_cycle->conf_prefix.len;
cycle->conf_prefix.data = ngx_pstrdup(pool, &old_cycle->conf_prefix);
if (cycle->conf_prefix.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->prefix.len = old_cycle->prefix.len;
cycle->prefix.data = ngx_pstrdup(pool, &old_cycle->prefix);
if (cycle->prefix.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->conf_file.len = old_cycle->conf_file.len;
cycle->conf_file.data = ngx_pnalloc(pool, old_cycle->conf_file.len + 1);
if (cycle->conf_file.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
ngx_cpystrn(cycle->conf_file.data, old_cycle->conf_file.data,
old_cycle->conf_file.len + 1);
cycle->conf_param.len = old_cycle->conf_param.len;
cycle->conf_param.data = ngx_pstrdup(pool, &old_cycle->conf_param);
if (cycle->conf_param.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
n = old_cycle->paths.nelts ? old_cycle->paths.nelts : 10;
cycle->paths.elts = ngx_pcalloc(pool, n * sizeof(ngx_path_t *));
if (cycle->paths.elts == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->paths.nelts = 0;
cycle->paths.size = sizeof(ngx_path_t *);
cycle->paths.nalloc = n;
cycle->paths.pool = pool;
if (old_cycle->open_files.part.nelts) {
n = old_cycle->open_files.part.nelts;
for (part = old_cycle->open_files.part.next; part; part = part->next) {
n += part->nelts;
}
} else {
n = 20;
}
if (ngx_list_init(&cycle->open_files, pool, n, sizeof(ngx_open_file_t))
!= NGX_OK)
{
ngx_destroy_pool(pool);
return NULL;
}
if (old_cycle->shared_memory.part.nelts) {
n = old_cycle->shared_memory.part.nelts;
for (part = old_cycle->shared_memory.part.next; part; part = part->next)
{
n += part->nelts;
}
} else {
n = 1;
}
//ngx_list_init主要是初始链表的elts,并为其申请内存
if (ngx_list_init(&cycle->shared_memory, pool, n, sizeof(ngx_shm_zone_t))
!= NGX_OK)
{
ngx_destroy_pool(pool);
return NULL;
}
n = old_cycle->listening.nelts ? old_cycle->listening.nelts : 10;
cycle->listening.elts = ngx_pcalloc(pool, n * sizeof(ngx_listening_t));
if (cycle->listening.elts == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->listening.nelts = 0;
cycle->listening.size = sizeof(ngx_listening_t);
cycle->listening.nalloc = n;
cycle->listening.pool = pool;
//初始化双向链表。主要存储着可反复用的连接ngx_connection_t
ngx_queue_init(&cycle->reusable_connections_queue);
cycle->conf_ctx = ngx_pcalloc(pool, ngx_max_module * sizeof(void *));
if (cycle->conf_ctx == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
if (gethostname(hostname, NGX_MAXHOSTNAMELEN) == -1) {//获取主机名称
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "gethostname() failed");
ngx_destroy_pool(pool);
return NULL;
}
/* on Linux gethostname() silently truncates name that does not fit */
hostname[NGX_MAXHOSTNAMELEN - 1] = '\0';
cycle->hostname.len = ngx_strlen(hostname);
cycle->hostname.data = ngx_pnalloc(pool, cycle->hostname.len);
if (cycle->hostname.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
ngx_strlow(cycle->hostname.data, (u_char *) hostname, cycle->hostname.len);
//调用全部NGX_CORE_MODULE的create_conf构建配置结构体。并保存在conf_ctx数组里面
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->type != NGX_CORE_MODULE) { //event 和http 和core 三个module
continue;
}
//上下文操作
//static ngx_core_module_t ngx_events_module_ctx = {
//ngx_string("events"),
//NULL,
//ngx_event_init_conf
//};
//static ngx_core_module_t ngx_http_module_ctx = {
//ngx_string("http"),
//NULL,
//NULL
//};
//static ngx_core_module_t ngx_core_module_ctx = {
// ngx_string("core"),
//ngx_core_module_create_conf,
// ngx_core_module_init_conf
//};
//
module = ngx_modules[i]->ctx; //core module 模块只有create 和 init 两个回调函数 其他
if (module->create_conf) { // rv 返回ngx_core_conf_t
rv = module->create_conf(cycle);
if (rv == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->conf_ctx[ngx_modules[i]->index] = rv; //倒数第二级指针存放的是每个模块的create-conf 的指针
}
}
senv = environ;
ngx_memzero(&conf, sizeof(ngx_conf_t));
/* STUB: init array ? */
conf.args = ngx_array_create(pool, 10, sizeof(ngx_str_t));
if (conf.args == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
conf.temp_pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log);
if (conf.temp_pool == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
conf.ctx = cycle->conf_ctx;
conf.cycle = cycle;
conf.pool = pool;
conf.log = log;
conf.module_type = NGX_CORE_MODULE;
conf.cmd_type = NGX_MAIN_CONF;
#if 0
log->log_level = NGX_LOG_DEBUG_ALL;
#endif
//2.4从命令行和配置文件里把全部配置更新到cycle的conf_ctx中:首先调用ngx_conf_param把命令行中的指令（-g directives）转换为配置结构并把指针增加到cycle.conf_ctx中;接着调用ngx_conf_parse(..,filename)把配置文件里的指令转换为配置结构并把指针增加到cycle.conf_ctx中。
if (ngx_conf_param(&conf) != NGX_CONF_OK) {
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
if (ngx_conf_parse(&conf, &cycle->conf_file) != NGX_CONF_OK) {
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
if (ngx_test_config && !ngx_quiet_mode) {
ngx_log_stderr(0, "the configuration file %s syntax is ok",
cycle->conf_file.data);
}
//2.5调用全部核心模块的init函数初始化全部核心模块的配置结构体
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->type != NGX_CORE_MODULE) {
continue;
}
module = ngx_modules[i]->ctx;
if (module->init_conf) {//调用模块的init_conf初始化全部核心模块的配置结构体
if (module->init_conf(cycle, cycle->conf_ctx[ngx_modules[i]->index])
== NGX_CONF_ERROR)
{
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
}
}
if (ngx_process == NGX_PROCESS_SIGNALLER) {
return cycle;
}
//2.6获得核心模块ngx_core_dodule的配置结构，然后调用ngx_create_pidfile创建pid文件
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
if (ngx_test_config) {
if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) {
goto failed;
}
} else if (!ngx_is_init_cycle(old_cycle)) {
/*
* we do not create the pid file in the first ngx_init_cycle() call
* because we need to write the demonized process pid
*/
old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx,
ngx_core_module);
if (ccf->pid.len != old_ccf->pid.len
|| ngx_strcmp(ccf->pid.data, old_ccf->pid.data) != 0)
{
/* new pid file name */
if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) {
goto failed;
}
ngx_delete_pidfile(old_cycle);
}
}
if (ngx_test_lockfile(cycle->lock_file.data, log) != NGX_OK) {
goto failed;
}
if (ngx_create_paths(cycle, ccf->user) != NGX_OK) {
goto failed;
}
if (ngx_log_open_default(cycle) != NGX_OK) {
goto failed;
}
/* open the new files */
part = &cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].name.len == 0) {
continue;
}
file[i].fd = ngx_open_file(file[i].name.data,
NGX_FILE_APPEND,
NGX_FILE_CREATE_OR_OPEN,
NGX_FILE_DEFAULT_ACCESS);
ngx_log_debug3(NGX_LOG_DEBUG_CORE, log, 0,
"log: %p %d \"%s\"",
&file[i], file[i].fd, file[i].name.data);
if (file[i].fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_open_file_n " \"%s\" failed",
file[i].name.data);
goto failed;
}
#if !(NGX_WIN32)
if (fcntl(file[i].fd, F_SETFD, FD_CLOEXEC) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
"fcntl(FD_CLOEXEC) \"%s\" failed",
file[i].name.data);
goto failed;
}
#endif
}
cycle->log = &cycle->new_log;
pool->log = &cycle->new_log;
/* create shared memory */
part = &cycle->shared_memory.part;
shm_zone = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
shm_zone = part->elts;
i = 0;
}
if (shm_zone[i].shm.size == 0) {
ngx_log_error(NGX_LOG_EMERG, log, 0,
"zero size shared memory zone \"%V\"",
&shm_zone[i].shm.name);
goto failed;
}
shm_zone[i].shm.log = cycle->log;
opart = &old_cycle->shared_memory.part;
oshm_zone = opart->elts;
for (n = 0; /* void */ ; n++) {
if (n >= opart->nelts) {
if (opart->next == NULL) {
break;
}
opart = opart->next;
oshm_zone = opart->elts;
n = 0;
}
if (shm_zone[i].shm.name.len != oshm_zone[n].shm.name.len) {
continue;
}
if (ngx_strncmp(shm_zone[i].shm.name.data,
oshm_zone[n].shm.name.data,
shm_zone[i].shm.name.len)
!= 0)
{
continue;
}
if (shm_zone[i].tag == oshm_zone[n].tag
&& shm_zone[i].shm.size == oshm_zone[n].shm.size
&& !shm_zone[i].noreuse)
{
shm_zone[i].shm.addr = oshm_zone[n].shm.addr;
#if (NGX_WIN32)
shm_zone[i].shm.handle = oshm_zone[n].shm.handle;
#endif
if (shm_zone[i].init(&shm_zone[i], oshm_zone[n].data)
!= NGX_OK)
{
goto failed;
}
goto shm_zone_found;
}
ngx_shm_free(&oshm_zone[n].shm);
break;
}
if (ngx_shm_alloc(&shm_zone[i].shm) != NGX_OK) {
goto failed;
}
if (ngx_init_zone_pool(cycle, &shm_zone[i]) != NGX_OK) {
goto failed;
}
if (shm_zone[i].init(&shm_zone[i], NULL) != NGX_OK) {
goto failed;
}
shm_zone_found:
continue;
}
/* handle the listening sockets */
//2.8打开新文件，在第2步的时候提到cycle->open_files这个链表是空的。仅仅是给它预先分配了空间，并没有数据。这里之所以可能会有文件被打开，预计是前面读配置文件的时候，调用各个钩子的过程中，填充了这个链表，把ngx_open_file_t结构变量填充进来（结构体中包括要打开文件的路径信息），接着改动一下cycle的成员：cycle->log = &cycle->new_log;pool->log = &cycle->new_log;
//2.9创建共享内存，和open_files类似，在第2步的时候cycle－>share_memory也初始化为一个空的链表。也是预分配了空间，假设此时链表中已经被填充了ngx_shm_zone_t结构变量（当中包括须要共享内存的尺寸和标识等信息）。那么这里就会分配共享内存，而且调用合适的初始化钩子初始化分配的共享内存，每块共享内存都会有name标识。这里也会做一些排重，已经分配的就不会再去分配。从对open_files和share_memory的处理过程能够看出，nginx在资源管理上是集中分配的，请求资源的时候分配说明性的结构变量，然后在恰当的时机才去真正分配资源。
//2.10处理listening sockets，cycle->listening是ngx_listening_t结构的数组。把cycle->listening于old_cycle->listening进行比較。设置cycle->listening的一些状态信息。接着调用ngx_open_listening_sockets(cycle)启动cycle->listening中的全部监听socket，循环调用socket,bind,listen完毕服务端监听socket的启动。接着调用ngx_configure_listening_sockets(cycle)配置监听socket。会依据ngx_listening_t中的状态信息设置socket的读写缓存和TCP_DEFER_ACCEPT。
if (old_cycle->listening.nelts) {
ls = old_cycle->listening.elts;
for (i = 0; i < old_cycle->listening.nelts; i++) {
ls[i].remain = 0;
}
nls = cycle->listening.elts;
for (n = 0; n < cycle->listening.nelts; n++) {
for (i = 0; i < old_cycle->listening.nelts; i++) {
if (ls[i].ignore) {//标识位为1表示跳过设置ngx_lisenting_t中的套接字。
continue; //为0表示正常初始化套接字
}
if (ngx_cmp_sockaddr(nls[n].sockaddr, nls[n].socklen,
ls[i].sockaddr, ls[i].socklen, 1)
== NGX_OK)
{
nls[n].fd = ls[i].fd;
nls[n].previous = &ls[i];
ls[i].remain = 1;//不关闭已经打开的套接字
if (ls[i].backlog != nls[n].backlog) {
nls[n].listen = 1;//套接字已监听
}
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
/*
* FreeBSD, except the most recent versions,
* could not remove accept filter
*/
nls[n].deferred_accept = ls[i].deferred_accept;
if (ls[i].accept_filter && nls[n].accept_filter) {
if (ngx_strcmp(ls[i].accept_filter,
nls[n].accept_filter)
!= 0)
{
nls[n].delete_deferred = 1;
nls[n].add_deferred = 1;
}
} else if (ls[i].accept_filter) {
nls[n].delete_deferred = 1;
} else if (nls[n].accept_filter) {
nls[n].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (ls[i].deferred_accept && !nls[n].deferred_accept) {
nls[n].delete_deferred = 1;
} else if (ls[i].deferred_accept != nls[n].deferred_accept)
{
nls[n].add_deferred = 1;
}
#endif
break;
}
}
if (nls[n].fd == (ngx_socket_t) -1) {
nls[n].open = 1;
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
if (nls[n].accept_filter) {
nls[n].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (nls[n].deferred_accept) {
nls[n].add_deferred = 1;
}
#endif
}
}
} else {
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
ls[i].open = 1;
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
if (ls[i].accept_filter) {
ls[i].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (ls[i].deferred_accept) {
ls[i].add_deferred = 1;
}
#endif
}
}
//在ngx_open_listening_sockets函数的代码中可以看到bind、
//listen等套接字函数的调用。最终创建完的监听套接字就在
//cycle结构体的listening域里 主程序中完成socket的基础设置，完成监听操作。
if (ngx_open_listening_sockets(cycle) != NGX_OK) {
goto failed;
}
if (!ngx_test_config) {
ngx_configure_listening_sockets(cycle);
}
/* commit the new cycle configuration */
if (!ngx_use_stderr) {
(void) ngx_log_redirect_stderr(cycle);
}
pool->log = cycle->log;
for (i = 0; ngx_modules[i]; i++) {// 调用全部模块的init_module
if (ngx_modules[i]->init_module) {
if (ngx_modules[i]->init_module(cycle) != NGX_OK) {
/* fatal */
exit(1);
}
}
}
/* close and delete stuff that lefts from an old cycle */
/* free the unnecessary shared memory */
opart = &old_cycle->shared_memory.part;
oshm_zone = opart->elts;
for (i = 0; /* void */ ; i++) {
if (i >= opart->nelts) {
if (opart->next == NULL) {
goto old_shm_zone_done;
}
opart = opart->next;
oshm_zone = opart->elts;
i = 0;
}
part = &cycle->shared_memory.part;
shm_zone = part->elts;
for (n = 0; /* void */ ; n++) {
if (n >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
shm_zone = part->elts;
n = 0;
}
if (oshm_zone[i].shm.name.len == shm_zone[n].shm.name.len
&& ngx_strncmp(oshm_zone[i].shm.name.data,
shm_zone[n].shm.name.data,
oshm_zone[i].shm.name.len)
== 0)
{
goto live_shm_zone;
}
}
ngx_shm_free(&oshm_zone[i].shm);
live_shm_zone:
continue;
}
old_shm_zone_done:
/* close the unnecessary listening sockets */
ls = old_cycle->listening.elts;
for (i = 0; i < old_cycle->listening.nelts; i++) {
if (ls[i].remain || ls[i].fd == (ngx_socket_t) -1) {
continue;
}
if (ngx_close_socket(ls[i].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_close_socket_n " listening socket on %V failed",
&ls[i].addr_text);
}
#if (NGX_HAVE_UNIX_DOMAIN)
if (ls[i].sockaddr->sa_family == AF_UNIX) {
u_char *name;
name = ls[i].addr_text.data + sizeof("unix:") - 1;
ngx_log_error(NGX_LOG_WARN, cycle->log, 0,
"deleting socket %s", name);
if (ngx_delete_file(name) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
ngx_delete_file_n " %s failed", name);
}
}
#endif
}
/* close the unnecessary open files */
part = &old_cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) {
continue;
}
if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
}
ngx_destroy_pool(conf.temp_pool);
if (ngx_process == NGX_PROCESS_MASTER || ngx_is_init_cycle(old_cycle)) {
/*
* perl_destruct() frees environ, if it is not the same as it was at
* perl_construct() time, therefore we save the previous cycle
* environment before ngx_conf_parse() where it will be changed.
*/
env = environ;
environ = senv;
ngx_destroy_pool(old_cycle->pool);
cycle->old_cycle = NULL;
environ = env;
return cycle;
}
if (ngx_temp_pool == NULL) {
ngx_temp_pool = ngx_create_pool(128, cycle->log);
if (ngx_temp_pool == NULL) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
"could not create ngx_temp_pool");
exit(1);
}
n = 10;
ngx_old_cycles.elts = ngx_pcalloc(ngx_temp_pool,
n * sizeof(ngx_cycle_t *));
if (ngx_old_cycles.elts == NULL) {
exit(1);
}
ngx_old_cycles.nelts = 0;
ngx_old_cycles.size = sizeof(ngx_cycle_t *);
ngx_old_cycles.nalloc = n;
ngx_old_cycles.pool = ngx_temp_pool;
ngx_cleaner_event.handler = ngx_clean_old_cycles;
ngx_cleaner_event.log = cycle->log;
ngx_cleaner_event.data = &dumb;
dumb.fd = (ngx_socket_t) -1;
}
ngx_temp_pool->log = cycle->log;
old = ngx_array_push(&ngx_old_cycles);
if (old == NULL) {
exit(1);
}
*old = old_cycle;
if (!ngx_cleaner_event.timer_set) {
ngx_add_timer(&ngx_cleaner_event, 30000);
ngx_cleaner_event.timer_set = 1;
}
return cycle;
failed:
if (!ngx_is_init_cycle(old_cycle)) {
old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx,
ngx_core_module);
if (old_ccf->environment) {
environ = old_ccf->environment;
}
}
/* rollback the new cycle configuration */
part = &cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) {
continue;
}
if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
}
if (ngx_test_config) {
ngx_destroy_cycle_pools(&conf);
return NULL;
}
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
if (ls[i].fd == (ngx_socket_t) -1 || !ls[i].open) {
continue;
}
if (ngx_close_socket(ls[i].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_close_socket_n " %V failed",
&ls[i].addr_text);
}
}
ngx_destroy_cycle_pools(&conf);
return NULL;
}
static char *
ngx_http_js_include(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_js_loc_conf_t *jlcf = conf;
size_t size;
u_char *start, *end;
ssize_t n;
ngx_fd_t fd;
ngx_str_t *value, file;
nxt_int_t rc;
nxt_str_t text, ext, *export;
nxt_lvlhsh_t externals;
ngx_file_info_t fi;
njs_vm_shared_t *shared;
ngx_pool_cleanup_t *cln;
nxt_mem_cache_pool_t *mcp;
if (jlcf->vm) {
return "is duplicate";
}
value = cf->args->elts;
file = value[1];
if (ngx_conf_full_name(cf->cycle, &file, 1) != NGX_OK) {
return NGX_CONF_ERROR;
}
fd = ngx_open_file(file.data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno,
ngx_open_file_n " \"%s\" failed", file.data);
return NGX_CONF_ERROR;
}
if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cf->log, ngx_errno,
ngx_fd_info_n " \"%s\" failed", file.data);
(void) ngx_close_file(fd);
return NGX_CONF_ERROR;
}
size = ngx_file_size(&fi);
start = ngx_pnalloc(cf->pool, size);
if (start == NULL) {
(void) ngx_close_file(fd);
return NGX_CONF_ERROR;
}
n = ngx_read_fd(fd, start, size);
if (n == -1) {
ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
ngx_read_fd_n " \"%s\" failed", file.data);
(void) ngx_close_file(fd);
return NGX_CONF_ERROR;
}
if ((size_t) n != size) {
ngx_log_error(NGX_LOG_ALERT, cf->log, 0,
ngx_read_fd_n " has read only %z of %O from \"%s\"",
n, size, file.data);
(void) ngx_close_file(fd);
return NGX_CONF_ERROR;
}
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
ngx_close_file_n " %s failed", file.data);
}
end = start + size;
mcp = ngx_http_js_create_mem_cache_pool();
if (mcp == NULL) {
return NGX_CONF_ERROR;
}
cln = ngx_pool_cleanup_add(cf->pool, 0);
if (cln == NULL) {
return NULL;
}
cln->handler = ngx_http_js_cleanup_mem_cache_pool;
cln->data = mcp;
shared = NULL;
nxt_lvlhsh_init(&externals);
if (njs_vm_external_add(&externals, mcp, 0, ngx_http_js_externals,
nxt_nitems(ngx_http_js_externals))
!= NJS_OK)
{
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "could not add js externals");
return NGX_CONF_ERROR;
}
jlcf->vm = njs_vm_create(mcp, &shared, &externals);
if (jlcf->vm == NULL) {
return NGX_CONF_ERROR;
}
rc = njs_vm_compile(jlcf->vm, &start, end, NULL, &export);
if (rc != NJS_OK) {
njs_vm_exception(jlcf->vm, &text);
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"%*s, included",
text.length, text.start);
return NGX_CONF_ERROR;
}
if (start != end) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"extra characters in js script: \"%*s\", included",
end - start, start);
return NGX_CONF_ERROR;
}
ext = nxt_string_value("$r");
if (njs_vm_external(jlcf->vm, NULL, &ext, &jlcf->args[0]) != NJS_OK) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"js external \"%*s\" not found",
ext.length, ext.start);
return NGX_CONF_ERROR;
}
ext = nxt_string_value("response");
rc = njs_vm_external(jlcf->vm, &jlcf->args[0], &ext, &jlcf->args[1]);
if (rc != NXT_OK) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"js external \"$r.%*s\" not found",
ext.length, ext.start);
return NGX_CONF_ERROR;
}
return NGX_CONF_OK;
}
ngx_log_t *
ngx_log_init(u_char *prefix)
{
u_char *p, *name;
size_t nlen, plen;
ngx_log.file = &ngx_log_file;
ngx_log.log_level = NGX_LOG_NOTICE; /*设置日志打印的默认级别*/
name = (u_char *) NGX_ERROR_LOG_PATH;
/*
* we use ngx_strlen() here since BCC warns about
* condition is always false and unreachable code
*/
nlen = ngx_strlen(name);
if (nlen == 0) {
ngx_log_file.fd = ngx_stderr;
return &ngx_log;
}
p = NULL;
#if (NGX_WIN32)
if (name[1] != ':') {
#else
if (name[0] != '/') {
#endif
if (prefix) {
plen = ngx_strlen(prefix);
} else {
#ifdef NGX_PREFIX
prefix = (u_char *) NGX_PREFIX;
plen = ngx_strlen(prefix);
#else
plen = 0;
#endif
}
if (plen) {
name = malloc(plen + nlen + 2);
if (name == NULL) {
return NULL;
}
p = ngx_cpymem(name, prefix, plen);
if (!ngx_path_separator(*(p - 1))) {
*p++ = '/';
}
ngx_cpystrn(p, (u_char *) NGX_ERROR_LOG_PATH, nlen + 1);
p = name;
}
}
ngx_log_file.fd = ngx_open_file(name, NGX_FILE_APPEND,
NGX_FILE_CREATE_OR_OPEN,
NGX_FILE_DEFAULT_ACCESS); /*创建日志文件*/
if (ngx_log_file.fd == NGX_INVALID_FILE) {
ngx_log_stderr(ngx_errno,
"[alert] could not open error log file: "
ngx_open_file_n " \"%s\" failed", name);
#if (NGX_WIN32)
ngx_event_log(ngx_errno,
"could not open error log file: "
ngx_open_file_n " \"%s\" failed", name);
#endif
ngx_log_file.fd = ngx_stderr;
}
if (p) {
ngx_free(p);
}
return &ngx_log;
}
ngx_int_t
ngx_log_open_default(ngx_cycle_t *cycle)
{
static ngx_str_t error_log = ngx_string(NGX_ERROR_LOG_PATH);
if (cycle->new_log.file == NULL) {
cycle->new_log.file = ngx_conf_open_file(cycle, &error_log);
if (cycle->new_log.file == NULL) {
return NGX_ERROR;
}
cycle->new_log.log_level = NGX_LOG_ERR;
}
return NGX_OK;
}
ngx_int_t
ngx_log_redirect_stderr(ngx_cycle_t *cycle)
{
ngx_fd_t fd;
if (cycle->log_use_stderr) {
return NGX_OK;
}
fd = cycle->log->file->fd;
if (fd != ngx_stderr) {
if (ngx_set_stderr(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
ngx_set_stderr_n " failed");
return NGX_ERROR;
}
}
return NGX_OK;
}
void
ngx_reopen_files(ngx_cycle_t *cycle, ngx_uid_t user)
{
ssize_t n, len;
ngx_fd_t fd;
ngx_uint_t i;
ngx_list_part_t *part;
ngx_open_file_t *file;
part = &cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {//大于等于总文件数
if (part->next == NULL) {
break;//如果没有了，就返回
}
part = part->next;//如果还有，标记i = 0,重新来
file = part->elts;
i = 0;
}
if (file[i].name.len == 0) {
continue;
}
len = file[i].pos - file[i].buffer;
if (file[i].buffer && len != 0) {//要写进去吗，确认?
n = ngx_write_fd(file[i].fd, file[i].buffer, len);
if (n == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, ngx_write_fd_n " to \"%s\" failed", file[i].name.data);
} else if (n != len) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, ngx_write_fd_n " to \"%s\" was incomplete: %z of %uz", file[i].name.data, n, len);
}
file[i].pos = file[i].buffer;
}
//再次打开以下这个文件
fd = ngx_open_file(file[i].name.data, NGX_FILE_APPEND, NGX_FILE_CREATE_OR_OPEN, NGX_FILE_DEFAULT_ACCESS);
ngx_log_debug3(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "reopen file \"%s\", old:%d new:%d", file[i].name.data, file[i].fd, fd);
if (fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, ngx_open_file_n " \"%s\" failed", file[i].name.data);
continue;
}
#if !(NGX_WIN32)//如果是unix系的操作系统，需要设置文件拥有者啥的
if (user != (ngx_uid_t) NGX_CONF_UNSET_UINT) {
ngx_file_info_t fi;
//得到文件的信息
if (ngx_file_info((const char *) file[i].name.data, &fi) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, ngx_file_info_n " \"%s\" failed", file[i].name.data);
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, ngx_close_file_n " \"%s\" failed", file[i].name.data);
}
}
//修改文件所有者
if (fi.st_uid != user) {
if (chown((const char *) file[i].name.data, user, -1) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, "chown(\"%s\", %d) failed", file[i].name.data, user);
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, ngx_close_file_n " \"%s\" failed", file[i].name.data);
}
}
}
//修改文件权限
if ((fi.st_mode & (S_IRUSR|S_IWUSR)) != (S_IRUSR|S_IWUSR)) { fi.st_mode |= (S_IRUSR|S_IWUSR);
if (chmod((const char *) file[i].name.data, fi.st_mode) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, "chmod() \"%s\" failed", file[i].name.data);
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, ngx_close_file_n " \"%s\" failed", file[i].name.data);
}
}
}
}
if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, "fcntl(FD_CLOEXEC) \"%s\" failed", file[i].name.data);
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, ngx_close_file_n " \"%s\" failed", file[i].name.data);
}
continue;
}
#endif
if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {//关闭掉老的文件句柄
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, ngx_close_file_n " \"%s\" failed",file[i].name.data);
}
//赋值为新的文件句柄。放心吧，没有别的地方使用这个fd的，就我一个进程，多线程版本不在此
file[i].fd = fd;
}
#if !(NGX_WIN32)
if (cycle->log->file->fd != STDERR_FILENO) {//int dup2(int oldfd, int newfd);
if (dup2(cycle->log->file->fd, STDERR_FILENO) == -1) {//标准错误输出也设置为日志.那程序的fprint(stderr,)将输出到日志文件
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,"dup2(STDERR) failed");
}
}
#endif
}
char *
ngx_conf_parse(ngx_conf_t *cf, ngx_str_t *filename)
{
char *rv;
u_char *p;
off_t size;
ngx_fd_t fd;
ngx_int_t rc;
ngx_buf_t buf, *tbuf;
ngx_conf_file_t *prev, conf_file;
ngx_conf_dump_t *cd;
enum {
parse_file = 0,
parse_block,
parse_param
} type;
#if (NGX_SUPPRESS_WARN)
fd = NGX_INVALID_FILE;
prev = NULL;
#endif
if (filename) {
/* open configuration file */
//打开配置文件
fd = ngx_open_file(filename->data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno,
ngx_open_file_n " \"%s\" failed",
filename->data);
return NGX_CONF_ERROR;
}
prev = cf->conf_file;
cf->conf_file = &conf_file;
if (ngx_fd_info(fd, &cf->conf_file->file.info) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cf->log, ngx_errno,
ngx_fd_info_n " \"%s\" failed", filename->data);
}
cf->conf_file->buffer = &buf;
buf.start = ngx_alloc(NGX_CONF_BUFFER, cf->log);
if (buf.start == NULL) {
goto failed;
}
buf.pos = buf.start;
buf.last = buf.start;
buf.end = buf.last + NGX_CONF_BUFFER;
buf.temporary = 1;
cf->conf_file->file.fd = fd;
cf->conf_file->file.name.len = filename->len;
cf->conf_file->file.name.data = filename->data;
cf->conf_file->file.offset = 0;
cf->conf_file->file.log = cf->log;
cf->conf_file->line = 1;
type = parse_file;
if (ngx_dump_config
#if (NGX_DEBUG)
|| 1
#endif
)
{
p = ngx_pstrdup(cf->cycle->pool, filename);
if (p == NULL) {
goto failed;
}
size = ngx_file_size(&cf->conf_file->file.info);
tbuf = ngx_create_temp_buf(cf->cycle->pool, (size_t) size);
if (tbuf == NULL) {
goto failed;
}
cd = ngx_array_push(&cf->cycle->config_dump);
if (cd == NULL) {
goto failed;
}
cd->name.len = filename->len;
cd->name.data = p;
cd->buffer = tbuf;
cf->conf_file->dump = tbuf;
} else {
cf->conf_file->dump = NULL;
}
} else if (cf->conf_file->file.fd != NGX_INVALID_FILE) {
type = parse_block;
} else {
type = parse_param;
}
for ( ;; ) {
rc = ngx_conf_read_token(cf);
/*
* ngx_conf_read_token() may return
*
* NGX_ERROR there is error
* NGX_OK the token terminated by ";" was found
* NGX_CONF_BLOCK_START the token terminated by "{" was found
* NGX_CONF_BLOCK_DONE the "}" was found
* NGX_CONF_FILE_DONE the configuration file is done
*/
if (rc == NGX_ERROR) {
goto done;
}
if (rc == NGX_CONF_BLOCK_DONE) {
if (type != parse_block) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "unexpected \"}\"");
goto failed;
}
goto done;
}
if (rc == NGX_CONF_FILE_DONE) {
if (type == parse_block) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"unexpected end of file, expecting \"}\"");
goto failed;
}
goto done;
}
if (rc == NGX_CONF_BLOCK_START) {
if (type == parse_param) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"block directives are not supported "
"in -g option");
goto failed;
}
}
/* rc == NGX_OK || rc == NGX_CONF_BLOCK_START */
if (cf->handler) {
/*
* the custom handler, i.e., that is used in the http's
* "types { ... }" directive
*/
if (rc == NGX_CONF_BLOCK_START) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "unexpected \"{\"");
goto failed;
}
rv = (*cf->handler)(cf, NULL, cf->handler_conf);
if (rv == NGX_CONF_OK) {
continue;
}
if (rv == NGX_CONF_ERROR) {
goto failed;
}
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, rv);
goto failed;
}
rc = ngx_conf_handler(cf, rc);
if (rc == NGX_ERROR) {
goto failed;
}
}
failed:
rc = NGX_ERROR;
done:
if (filename) {
if (cf->conf_file->buffer->start) {
ngx_free(cf->conf_file->buffer->start);
}
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
ngx_close_file_n " %s failed",
filename->data);
rc = NGX_ERROR;
}
cf->conf_file = prev;
}
if (rc == NGX_ERROR) {
return NGX_CONF_ERROR;
}
return NGX_CONF_OK;
}
/*
加载配置文件，并回调create_conf,init_conf, init_module等；
初始化各个配置，并打开监听端口，设置优化选项；
*/
ngx_cycle_t * ngx_init_cycle(ngx_cycle_t *old_cycle)
{//整个程序的主要初始化，配置加载,解析，各个模块的初始化回调函数，指令的set回调函数调用，监听端口打开，共享内存申请等等都在这里.
void *rv;
char **senv, **env;
ngx_uint_t i, n;
ngx_log_t *log;
ngx_time_t *tp;
ngx_conf_t conf;
ngx_pool_t *pool;
ngx_cycle_t *cycle, **old;
ngx_shm_zone_t *shm_zone, *oshm_zone;
ngx_list_part_t *part, *opart;
ngx_open_file_t *file;
ngx_listening_t *ls, *nls;
ngx_core_conf_t *ccf, *old_ccf;
ngx_core_module_t *module;
char hostname[NGX_MAXHOSTNAMELEN];
ngx_timezone_update();
/* force localtime update with a new timezone */
tp = ngx_timeofday();//k : ngx_cached_time
tp->sec = 0;//秒设置为0
ngx_time_update();//迫使当前的缓存时间更新。
log = old_cycle->log;
pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log);
if (pool == NULL) {
return NULL;
}
pool->log = log;
cycle = ngx_pcalloc(pool, sizeof(ngx_cycle_t));//下一个过程吗
if (cycle == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->pool = pool;//cycle也是包含在pool里面的! ，也就是，释放了cycle->pool后，cycle也释放了
cycle->log = log;
cycle->new_log.log_level = NGX_LOG_ERR;
cycle->old_cycle = old_cycle;
//下面拷贝一下旧的配置路径什么的，参数等到新的cycle
cycle->conf_prefix.len = old_cycle->conf_prefix.len;
cycle->conf_prefix.data = ngx_pstrdup(pool, &old_cycle->conf_prefix);
if (cycle->conf_prefix.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->prefix.len = old_cycle->prefix.len;
cycle->prefix.data = ngx_pstrdup(pool, &old_cycle->prefix);
if (cycle->prefix.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->conf_file.len = old_cycle->conf_file.len;
cycle->conf_file.data = ngx_pnalloc(pool, old_cycle->conf_file.len + 1);
if (cycle->conf_file.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
ngx_cpystrn(cycle->conf_file.data, old_cycle->conf_file.data,
old_cycle->conf_file.len + 1);
cycle->conf_param.len = old_cycle->conf_param.len;
cycle->conf_param.data = ngx_pstrdup(pool, &old_cycle->conf_param);
if (cycle->conf_param.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
//干嘛的?
n = old_cycle->pathes.nelts ? old_cycle->pathes.nelts : 10;
cycle->pathes.elts = ngx_pcalloc(pool, n * sizeof(ngx_path_t *));
if (cycle->pathes.elts == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->pathes.nelts = 0;
cycle->pathes.size = sizeof(ngx_path_t *);
cycle->pathes.nalloc = n;
cycle->pathes.pool = pool;
if (old_cycle->open_files.part.nelts) {
n = old_cycle->open_files.part.nelts;
for (part = old_cycle->open_files.part.next; part; part = part->next) {
n += part->nelts;
}
} else {
n = 20;
}
if (ngx_list_init(&cycle->open_files, pool, n, sizeof(ngx_open_file_t)) != NGX_OK) {
ngx_destroy_pool(pool);
return NULL;
}
//拷贝共享内存
if (old_cycle->shared_memory.part.nelts) {
n = old_cycle->shared_memory.part.nelts;
for (part = old_cycle->shared_memory.part.next; part; part = part->next) {
n += part->nelts;
}
} else {
n = 1;
}
if (ngx_list_init(&cycle->shared_memory, pool, n, sizeof(ngx_shm_zone_t)) != NGX_OK) {
ngx_destroy_pool(pool);
return NULL;
}
//拷贝一下监听端口的信息；
n = old_cycle->listening.nelts ? old_cycle->listening.nelts : 10;
cycle->listening.elts = ngx_pcalloc(pool, n * sizeof(ngx_listening_t));
if (cycle->listening.elts == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->listening.nelts = 0;
cycle->listening.size = sizeof(ngx_listening_t);
cycle->listening.nalloc = n;
cycle->listening.pool = pool;
//为每个模块分配一个配置上下文指针，用来保存每个模块设置的配置数据
cycle->conf_ctx = ngx_pcalloc(pool, ngx_max_module * sizeof(void *));
if (cycle->conf_ctx == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
if (gethostname(hostname, NGX_MAXHOSTNAMELEN) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "gethostname() failed");
ngx_destroy_pool(pool);
return NULL;
}
/* on Linux gethostname() silently truncates name that does not fit */
hostname[NGX_MAXHOSTNAMELEN - 1] = '\0';
cycle->hostname.len = ngx_strlen(hostname);
cycle->hostname.data = ngx_pnalloc(pool, cycle->hostname.len);
if (cycle->hostname.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
ngx_strlow(cycle->hostname.data, (u_char *) hostname, cycle->hostname.len);
//k:for core modules.
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->type != NGX_CORE_MODULE) {
continue;
}
//对于核心模块
module = ngx_modules[i]->ctx;
if (module->create_conf) {//如果核心模块设置了create_conf回调，则调用它们
rv = module->create_conf(cycle);
if (rv == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->conf_ctx[ ngx_modules[i]->index ] = rv;//帮模块们保存create_conf返回的数据。后续可以方便取到
}
}
senv = environ;//保留老的environ，这个环境变量已经被我们拷贝到了新地址的
ngx_memzero(&conf, sizeof(ngx_conf_t));
/* STUB: init array ? */
conf.args = ngx_array_create(pool, 10, sizeof(ngx_str_t));
if (conf.args == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
conf.temp_pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log);
if (conf.temp_pool == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
//切换到新的配置
conf.ctx = cycle->conf_ctx;
conf.cycle = cycle;
conf.pool = pool;
conf.log = log;
conf.module_type = NGX_CORE_MODULE;
conf.cmd_type = NGX_MAIN_CONF;
#if 0
log->log_level = NGX_LOG_DEBUG_ALL;
#endif
if (ngx_conf_param(&conf) != NGX_CONF_OK) {//调用ngx_conf_parse解析全局指令，貌似是做参数准备的。
environ = senv;//还原老的environ，因为perl会改变它
ngx_destroy_cycle_pools(&conf);
return NULL;
}
//解析配置文件，调用各个配置文件的set函数等。
if (ngx_conf_parse(&conf, &cycle->conf_file) != NGX_CONF_OK) {
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
if (ngx_test_config && !ngx_quiet_mode) {//这就是经典的那个-t参数啦
ngx_log_stderr(0, "the configuration file %s syntax is ok", cycle->conf_file.data);
}
for (i = 0; ngx_modules[i]; i++) {
//刚才各个配置指令已经调用了其set函数的。下面调用一下每个模块的init_conf，也就是每个模块的各个指令已经设置，现在开始模块本身了。
if (ngx_modules[i]->type != NGX_CORE_MODULE) {
continue;
}
//对于NGX_CORE_MODULE，调用它他们的init_conf回调
module = ngx_modules[i]->ctx;//得到模块初始化设置的数据，然后调用其init_conf
if (module->init_conf) {
if (module->init_conf(cycle, cycle->conf_ctx[ngx_modules[i]->index])== NGX_CONF_ERROR){ //第二个参数是在create_conf回调返回的东西
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
}
}
if (ngx_process == NGX_PROCESS_SIGNALLER) {
return cycle;//如果是加-s reload等启动的，这里可以返回了。服务需要重启啥的，不是全新启动。在这里设置的ngx_get_options
}
// 最核心的配置
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);//k conf_ctx[module.index]
if (ngx_test_config) {
if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) {
goto failed;
}
} else if (!ngx_is_init_cycle(old_cycle)) {//第一次调用，old_cycle的配置相关的为空，第二次才是非空的。也就是下面的注释介绍的
/*
* we do not create the pid file in the first ngx_init_cycle() call
* because we need to write the demonized process pid
*/
old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx, ngx_core_module);
if (ccf->pid.len != old_ccf->pid.len || ngx_strcmp(ccf->pid.data, old_ccf->pid.data) != 0) {
/* new pid file name */
if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) {
goto failed;
}
ngx_delete_pidfile(old_cycle);//删除旧的，这是啥原因，比如配置重新加载吗，文件变了啥的
}
}
//就打开文件，关闭，然后删除之
if (ngx_test_lockfile(cycle->lock_file.data, log) != NGX_OK) {
goto failed;
}
//创建这些目录，并设置权限啥的
if (ngx_create_pathes(cycle, ccf->user) != NGX_OK) {
goto failed;
}
if (cycle->new_log.file == NULL) {//找到"logs/error.log"的ngx_open_file_t*结构，不open打开
cycle->new_log.file = ngx_conf_open_file(cycle, &error_log);//"logs/error.log"
if (cycle->new_log.file == NULL) {
goto failed;
}
}
/* open the new files */
part = &cycle->open_files.part;
file = part->elts;
//一个个打开这些文件，APPEND模式打开
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].name.len == 0) {
continue;
}
//真正打开这些文件，append模式
file[i].fd = ngx_open_file(file[i].name.data, NGX_FILE_APPEND, NGX_FILE_CREATE_OR_OPEN, NGX_FILE_DEFAULT_ACCESS);
ngx_log_debug3(NGX_LOG_DEBUG_CORE, log, 0, "log: %p %d \"%s\"", &file[i], file[i].fd, file[i].name.data);
if (file[i].fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, ngx_open_file_n " \"%s\" failed", file[i].name.data);
goto failed;
}
#if !(NGX_WIN32)
// 这里设置为FD_CLOEXEC表示当程序执行exec函数时本fd将被系统自动关闭,表示不传递给exec创建的新进程。close-on-exec
if (fcntl(file[i].fd, F_SETFD, FD_CLOEXEC) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "fcntl(FD_CLOEXEC) \"%s\" failed", file[i].name.data);
goto failed;
}
#endif
}
cycle->log = &cycle->new_log;
pool->log = &cycle->new_log;
/* create shared memory */
part = &cycle->shared_memory.part;
shm_zone = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
shm_zone = part->elts;
i = 0;
}
if (shm_zone[i].shm.size == 0) {
ngx_log_error(NGX_LOG_EMERG, log, 0, "zero size shared memory zone \"%V\"", &shm_zone[i].shm.name);
goto failed;
}
if (shm_zone[i].init == NULL) {
/* unused shared zone */
continue;
}
shm_zone[i].shm.log = cycle->log;
opart = &old_cycle->shared_memory.part;
oshm_zone = opart->elts;
for (n = 0; /* void */ ; n++) {
if (n >= opart->nelts) {
if (opart->next == NULL) {
break;
}
opart = opart->next;
oshm_zone = opart->elts;
n = 0;
}
if (shm_zone[i].shm.name.len != oshm_zone[n].shm.name.len) {
continue;
}
if (ngx_strncmp(shm_zone[i].shm.name.data,
oshm_zone[n].shm.name.data,
shm_zone[i].shm.name.len)
!= 0)
{
continue;
}
if (shm_zone[i].shm.size == oshm_zone[n].shm.size) {
shm_zone[i].shm.addr = oshm_zone[n].shm.addr;
if (shm_zone[i].init(&shm_zone[i], oshm_zone[n].data)
!= NGX_OK)
{
goto failed;
}
goto shm_zone_found;
}
ngx_shm_free(&oshm_zone[n].shm);
break;
}
if (ngx_shm_alloc(&shm_zone[i].shm) != NGX_OK) {
goto failed;
}
if (ngx_init_zone_pool(cycle, &shm_zone[i]) != NGX_OK) {
goto failed;
}
if (shm_zone[i].init(&shm_zone[i], NULL) != NGX_OK) {
goto failed;
}
shm_zone_found:
continue;
}
/* handle the listening sockets */
if (old_cycle->listening.nelts) {//如果设置了继承SOCK，就拷贝到cycle来
ls = old_cycle->listening.elts;
for (i = 0; i < old_cycle->listening.nelts; i++) {
ls[i].remain = 0;//标记为全都不需要了，后面会清除
}
nls = cycle->listening.elts;
for (n = 0; n < cycle->listening.nelts; n++) {
for (i = 0; i < old_cycle->listening.nelts; i++) {
if (ls[i].ignore) {
continue;
}
if (ngx_cmp_sockaddr(nls[n].sockaddr, ls[i].sockaddr) == NGX_OK)
{//如果地址完全相同，那后面就不需要关闭，直接拷贝fd就行了
nls[n].fd = ls[i].fd;
nls[n].previous = &ls[i];
ls[i].remain = 1;
if (ls[n].backlog != nls[i].backlog) {
nls[n].listen = 1;
}
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
/*
* FreeBSD, except the most recent versions,
* could not remove accept filter
*/
nls[n].deferred_accept = ls[i].deferred_accept;
if (ls[i].accept_filter && nls[n].accept_filter) {
if (ngx_strcmp(ls[i].accept_filter,
nls[n].accept_filter)
!= 0)
{
nls[n].delete_deferred = 1;
nls[n].add_deferred = 1;
}
} else if (ls[i].accept_filter) {
nls[n].delete_deferred = 1;
} else if (nls[n].accept_filter) {
nls[n].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (ls[n].deferred_accept && !nls[n].deferred_accept) {
nls[n].delete_deferred = 1;
} else if (ls[i].deferred_accept != nls[n].deferred_accept)
{
nls[n].add_deferred = 1;
}
#endif
break;
}
}
if (nls[n].fd == -1) {
nls[n].open = 1;
}
}
} else {
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
ls[i].open = 1;
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
if (ls[i].accept_filter) {
ls[i].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (ls[i].deferred_accept) {
ls[i].add_deferred = 1;
}
#endif
}
}
//下面一个个打开cycle->listening的listen的端口，并设置为listening端口
//这些监听端口的可读事件是在ngx_event_core_module模块中设置的，其进程初始化函数为ngx_event_process_init里面会放入epoll里面
if (ngx_open_listening_sockets(cycle) != NGX_OK) {
goto failed;
}
if (!ngx_test_config) {//如果不是测试配置，设置一下各个优化选项，比如发送，接收缓冲区大小，TCP_DEFER_ACCEPT等
ngx_configure_listening_sockets(cycle);
}
/* commit the new cycle configuration */
if (!ngx_use_stderr && cycle->log->file->fd != ngx_stderr) {
if (ngx_set_stderr(cycle->log->file->fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, ngx_set_stderr_n " failed");
}
}
pool->log = cycle->log;
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->init_module) {//对所有模块，调用其init_module回调
if (ngx_modules[i]->init_module(cycle) != NGX_OK) {
/* fatal */
exit(1);
}
}
}
/* close and delete stuff that lefts from an old cycle */
/* free the unnecessary shared memory */
opart = &old_cycle->shared_memory.part;
oshm_zone = opart->elts;
for (i = 0; /* void */ ; i++) {
if (i >= opart->nelts) {
if (opart->next == NULL) {
goto old_shm_zone_done;
}
opart = opart->next;
oshm_zone = opart->elts;
i = 0;
}
part = &cycle->shared_memory.part;
shm_zone = part->elts;
for (n = 0; /* void */ ; n++) {
if (n >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
shm_zone = part->elts;
n = 0;
}
if (oshm_zone[i].shm.name.len == shm_zone[n].shm.name.len
&& ngx_strncmp(oshm_zone[i].shm.name.data,
shm_zone[n].shm.name.data,
oshm_zone[i].shm.name.len)
== 0){
goto live_shm_zone;
}
}
ngx_shm_free(&oshm_zone[i].shm);
live_shm_zone:
continue;
}
old_shm_zone_done:
/* close the unnecessary listening sockets */
ls = old_cycle->listening.elts;
for (i = 0; i < old_cycle->listening.nelts; i++) {
if (ls[i].remain || ls[i].fd == -1) {
continue;//需要保留或者fd无效，不用删除，因为已经拷贝到cycle中了
}
if (ngx_close_socket(ls[i].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,ngx_close_socket_n " listening socket on %V failed", &ls[i].addr_text);
}
#if (NGX_HAVE_UNIX_DOMAIN)
if (ls[i].sockaddr->sa_family == AF_UNIX) {
u_char *name;
name = ls[i].addr_text.data + sizeof("unix:") - 1;
ngx_log_error(NGX_LOG_WARN, cycle->log, 0,
"deleting socket %s", name);
if (ngx_delete_file(name) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
ngx_delete_file_n " %s failed", name);
}
}
#endif
}
/* close the unnecessary open files */
part = &old_cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) {
continue;
}
if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
}
ngx_destroy_pool(conf.temp_pool);
if (ngx_process == NGX_PROCESS_MASTER || ngx_is_init_cycle(old_cycle)) {//ngx_is_init_cycle第一次调用false
//这是怎么进来的?
/*
* perl_destruct() frees environ, if it is not the same as it was at
* perl_construct() time, therefore we save the previous cycle
* environment before ngx_conf_parse() where it will be changed.
*/
env = environ;
environ = senv;//还原之前保存的环境变量地址
ngx_destroy_pool(old_cycle->pool);
cycle->old_cycle = NULL;
environ = env;
return cycle;
}
if (ngx_temp_pool == NULL) {
ngx_temp_pool = ngx_create_pool(128, cycle->log);
if (ngx_temp_pool == NULL) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
"can not create ngx_temp_pool");
exit(1);
}
n = 10;
ngx_old_cycles.elts = ngx_pcalloc(ngx_temp_pool,
n * sizeof(ngx_cycle_t *));
if (ngx_old_cycles.elts == NULL) {
exit(1);
}
ngx_old_cycles.nelts = 0;
ngx_old_cycles.size = sizeof(ngx_cycle_t *);
ngx_old_cycles.nalloc = n;
ngx_old_cycles.pool = ngx_temp_pool;
ngx_cleaner_event.handler = ngx_clean_old_cycles;
ngx_cleaner_event.log = cycle->log;
ngx_cleaner_event.data = &dumb;
dumb.fd = (ngx_socket_t) -1;
}
ngx_temp_pool->log = cycle->log;
old = ngx_array_push(&ngx_old_cycles);
if (old == NULL) {
exit(1);
}
*old = old_cycle;
if (!ngx_cleaner_event.timer_set) {//如果还没有设置定时器，设置定时器，30秒后清除老的cycle?
ngx_add_timer(&ngx_cleaner_event, 30000);
ngx_cleaner_event.timer_set = 1;//标记此处已经设置过定时器了。
}
return cycle;
failed:
if (!ngx_is_init_cycle(old_cycle)) {
old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx,
ngx_core_module);
if (old_ccf->environment) {
environ = old_ccf->environment;
}
}
/* rollback the new cycle configuration */
part = &cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) {
continue;
}
if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
}
if (ngx_test_config) {
ngx_destroy_cycle_pools(&conf);
return NULL;
}
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
if (ls[i].fd == -1 || !ls[i].open) {
continue;
}
if (ngx_close_socket(ls[i].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_close_socket_n " %V failed",
&ls[i].addr_text);
}
}
ngx_destroy_cycle_pools(&conf);
return NULL;
}
char *
ngx_conf_parse(ngx_conf_t *cf, ngx_str_t *filename)
{ //第二个数为保存的配置文件路径的字符串，如/usr/local/nginx/conf/nginx.conf_file
char *rv;
ngx_fd_t fd;
ngx_int_t rc;
ngx_buf_t buf;
ngx_conf_file_t *prev, conf_file;
enum {
parse_file = 0,
parse_block,
parse_param
} type;
#if (NGX_SUPPRESS_WARN)
fd = NGX_INVALID_FILE;
prev = NULL;
#endif
if (filename) { //指向一个配置文件路径字符串，需要函数ngx_conf_parse打开该文件并获取相关的文件信息
/* open configuration file */
fd = ngx_open_file(filename->data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno,
ngx_open_file_n " \"%s\" failed",
filename->data);
return NGX_CONF_ERROR;
}
prev = cf->conf_file;
cf->conf_file = &conf_file;
if (ngx_fd_info(fd, &cf->conf_file->file.info) == -1) {
ngx_log_error(NGX_LOG_EMERG, cf->log, ngx_errno,
ngx_fd_info_n " \"%s\" failed", filename->data);
}
cf->conf_file->buffer = &buf;
buf.start = ngx_alloc(NGX_CONF_BUFFER, cf->log); //内存
if (buf.start == NULL) {
goto failed;
}
buf.pos = buf.start; //初始值
buf.last = buf.start;
buf.end = buf.last + NGX_CONF_BUFFER; //4K，到末尾
buf.temporary = 1;
cf->conf_file->file.fd = fd;
cf->conf_file->file.name.len = filename->len;
cf->conf_file->file.name.data = filename->data;
cf->conf_file->file.offset = 0;
cf->conf_file->file.log = cf->log;
cf->conf_file->line = 1;
type = parse_file; //刚刚打开的新文件，包括include指令
} else if (cf->conf_file->file.fd != NGX_INVALID_FILE) {
//说明此时仅解析了部分解析，当遇到复杂配置项，比如events，http等，此时解析的内容还是来自当前文件
type = parse_block;
} else {
//正要开始解析命令行参数配置项值，在对用户通过命令行-g参数输入的配置信息进行解析，如nginx -g 'daemon on'
type = parse_param;
}
for ( ;; ) {
rc = ngx_conf_read_token(cf); //读取token，每次读取一个buffer
/*
* ngx_conf_read_token() may return
*
* NGX_ERROR there is error
* NGX_OK the token terminated by ";" was found
* NGX_CONF_BLOCK_START the token terminated by "{" was found
* NGX_CONF_BLOCK_DONE the "}" was found
* NGX_CONF_FILE_DONE the configuration file is done
*/
if (rc == NGX_ERROR) {
goto done;
}
if (rc == NGX_CONF_BLOCK_DONE) { //解析正常
if (type != parse_block) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "unexpected \"}\"");
goto failed;
}
goto done;
}
if (rc == NGX_CONF_FILE_DONE) {
if (type == parse_block) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"unexpected end of file, expecting \"}\"");
goto failed;
}
goto done;
}
if (rc == NGX_CONF_BLOCK_START) {
if (type == parse_param) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"block directives are not supported "
"in -g option");
goto failed;
}
}
/* rc == NGX_OK || rc == NGX_CONF_BLOCK_START */
if (cf->handler) { //进行这些token转换为Nginx内控制变量的值，针对“text/html html htm shtml”等这样的配置项或geo模块里的“192.168.0.0/16 local”这样的不定配置项，进行特殊的处理
/*
* the custom handler, i.e., that is used in the http's
* "types { ... }" directive
*/
rv = (*cf->handler)(cf, NULL, cf->handler_conf);
if (rv == NGX_CONF_OK) {
continue;
}
if (rv == NGX_CONF_ERROR) {
goto failed;
}
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, rv);
goto failed;
}
rc = ngx_conf_handler(cf, rc); //配置转换
if (rc == NGX_ERROR) {
goto failed;
}
}
failed:
rc = NGX_ERROR;
done:
if (filename) {
if (cf->conf_file->buffer->start) {
ngx_free(cf->conf_file->buffer->start);
}
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
ngx_close_file_n " %s failed",
filename->data);
return NGX_CONF_ERROR;
}
cf->conf_file = prev;
}
if (rc == NGX_ERROR) {
return NGX_CONF_ERROR;
}
return NGX_CONF_OK;
}
ngx_int_t ngx_http_small_light_imagemagick_process(ngx_http_request_t *r, ngx_http_small_light_ctx_t *ctx)
{
ngx_http_small_light_imagemagick_ctx_t *ictx;
ngx_http_small_light_image_size_t sz;
MagickBooleanType status;
int rmprof_flg, progressive_flg, cmyk2rgb_flg;
double iw, ih, q;
char *unsharp, *sharpen, *blur, *of, *of_orig;
MagickWand *trans_wand, *canvas_wand;
DrawingWand *border_wand;
PixelWand *bg_color, *canvas_color, *border_color;
GeometryInfo geo;
ngx_fd_t fd;
MagickWand *icon_wand;
u_char *p, *embedicon;
size_t embedicon_path_len, embedicon_len, sled_image_size;
ngx_int_t type;
u_char jpeg_size_opt[32], crop_geo[128], size_geo[128], embedicon_path[256];
ColorspaceType color_space;
#if MagickLibVersion >= 0x690
int autoorient_flg;
#endif
status = MagickFalse;
ictx = (ngx_http_small_light_imagemagick_ctx_t *)ctx->ictx;
/* adjust image size */
ngx_http_small_light_calc_image_size(r, ctx, &sz, 10000.0, 10000.0);
/* prepare */
if (sz.jpeghint_flg != 0) {
p = ngx_snprintf((u_char *)jpeg_size_opt, sizeof(jpeg_size_opt) - 1, "%dx%d", (ngx_int_t)sz.dw, (ngx_int_t)sz.dh);
*p = '\0';
ngx_log_error(NGX_LOG_DEBUG, r->connection->log, 0, "jpeg_size_opt:%s", jpeg_size_opt);
MagickSetOption(ictx->wand, "jpeg:size", (char *)jpeg_size_opt);
}
/* load image. */
status = MagickReadImageBlob(ictx->wand, (void *)ictx->image, ictx->image_len);
if (status == MagickFalse) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"couldn't read image %s:%d",
__FUNCTION__,
__LINE__);
return NGX_ERROR;
}
MagickSetFirstIterator(ictx->wand);
color_space = MagickGetImageColorspace(ictx->wand);
/* remove all profiles */
rmprof_flg = ngx_http_small_light_parse_flag(NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "rmprof"));
if (rmprof_flg != 0) {
status = MagickProfileImage(ictx->wand, "*", NULL, 0);
if (status == MagickFalse) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"couldn't profiling image %s:%d",
__FUNCTION__,
__LINE__);
}
}
of_orig = MagickGetImageFormat(ictx->wand);
status = MagickTrue;
#if MagickLibVersion >= 0x690
/* auto-orient */
autoorient_flg = ngx_http_small_light_parse_flag(NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "autoorient"));
if (autoorient_flg != 0) {
status = MagickAutoOrientImage(ictx->wand);
if (status == MagickFalse) {
r->err_status = NGX_HTTP_INTERNAL_SERVER_ERROR;
DestroyString(of_orig);
return NGX_ERROR;
}
}
#endif
/* rotate. */
if (sz.angle) {
bg_color = NewPixelWand();
PixelSetRed(bg_color, sz.cc.r / 255.0);
PixelSetGreen(bg_color, sz.cc.g / 255.0);
PixelSetBlue(bg_color, sz.cc.b / 255.0);
PixelSetAlpha(bg_color, sz.cc.a / 255.0);
switch (sz.angle) {
case 90:
case 180:
case 270:
MagickRotateImage(ictx->wand, bg_color, sz.angle);
break;
default:
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"image not rotated. 'angle'(%ui) must be 90 or 180 or 270. %s:%d",
sz.angle,
__FUNCTION__,
__LINE__);
break;
}
DestroyPixelWand(bg_color);
}
/* calc size. */
iw = (double)MagickGetImageWidth(ictx->wand);
ih = (double)MagickGetImageHeight(ictx->wand);
ngx_http_small_light_calc_image_size(r, ctx, &sz, iw, ih);
/* pass through. */
if (sz.pt_flg != 0) {
ctx->of = ctx->inf;
DestroyString(of_orig);
return NGX_OK;
}
/* crop, scale. */
if (sz.scale_flg != 0) {
p = ngx_snprintf(crop_geo, sizeof(crop_geo) - 1, "%f!x%f!+%f+%f", sz.sw, sz.sh, sz.sx, sz.sy);
*p = '\0';
p = ngx_snprintf(size_geo, sizeof(size_geo) - 1, "%f!x%f!", sz.dw, sz.dh);
*p = '\0';
ngx_log_error(NGX_LOG_DEBUG, r->connection->log, 0, "crop_geo:%s", crop_geo);
ngx_log_error(NGX_LOG_DEBUG, r->connection->log, 0, "size_geo:%s", size_geo);
MagickResetImagePage(ictx->wand, "+0+0");
trans_wand = MagickTransformImage(ictx->wand, (char *)crop_geo, (char *)size_geo);
if (trans_wand == NULL || trans_wand == ictx->wand) {
r->err_status = NGX_HTTP_INTERNAL_SERVER_ERROR;
DestroyString(of_orig);
return NGX_ERROR;
}
DestroyMagickWand(ictx->wand);
ictx->wand = trans_wand;
}
/* create canvas then draw image to the canvas. */
if (sz.cw > 0.0 && sz.ch > 0.0) {
canvas_wand = NewMagickWand();
canvas_color = NewPixelWand();
PixelSetRed(canvas_color, sz.cc.r / 255.0);
PixelSetGreen(canvas_color, sz.cc.g / 255.0);
PixelSetBlue(canvas_color, sz.cc.b / 255.0);
PixelSetAlpha(canvas_color, sz.cc.a / 255.0);
status = MagickNewImage(canvas_wand, sz.cw, sz.ch, canvas_color);
DestroyPixelWand(canvas_color);
if (status == MagickFalse) {
r->err_status = NGX_HTTP_INTERNAL_SERVER_ERROR;
DestroyMagickWand(canvas_wand);
DestroyString(of_orig);
return NGX_ERROR;
}
status = MagickTransformImageColorspace(canvas_wand, color_space);
if (status == MagickFalse) {
r->err_status = NGX_HTTP_INTERNAL_SERVER_ERROR;
DestroyMagickWand(canvas_wand);
DestroyString(of_orig);
return NGX_ERROR;
}
status = MagickCompositeImage(canvas_wand, ictx->wand, AtopCompositeOp, sz.dx, sz.dy);
if (status == MagickFalse) {
r->err_status = NGX_HTTP_INTERNAL_SERVER_ERROR;
DestroyMagickWand(canvas_wand);
DestroyString(of_orig);
return NGX_ERROR;
}
DestroyMagickWand(ictx->wand);
ictx->wand = canvas_wand;
}
/* CMYK to sRGB */
cmyk2rgb_flg = ngx_http_small_light_parse_flag(NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "cmyk2rgb"));
if (cmyk2rgb_flg != 0 && color_space == CMYKColorspace) {
status = MagickTransformImageColorspace(ictx->wand, sRGBColorspace);
if (status == MagickFalse) {
r->err_status = NGX_HTTP_INTERNAL_SERVER_ERROR;
DestroyString(of_orig);
return NGX_ERROR;
}
}
/* effects. */
unsharp = NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "unsharp");
if (ngx_strlen(unsharp) > 0) {
ParseGeometry(unsharp, &geo);
if (geo.rho > ctx->radius_max || geo.sigma > ctx->sigma_max) {
ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
"As unsharp geometry is too large, ignored. %s:%d",
__FUNCTION__,
__LINE__);
} else {
status = MagickUnsharpMaskImage(ictx->wand, geo.rho, geo.sigma, geo.xi, geo.psi);
if (status == MagickFalse) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"unsharp failed %s:%d",
__FUNCTION__,
__LINE__);
}
}
}
sharpen = NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "sharpen");
if (ngx_strlen(sharpen) > 0) {
ParseGeometry(sharpen, &geo);
if (geo.rho > ctx->radius_max || geo.sigma > ctx->sigma_max) {
ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
"As sharpen geometry is too large, ignored. %s:%d",
__FUNCTION__,
__LINE__);
} else {
status = MagickSharpenImage(ictx->wand, geo.rho, geo.sigma);
if (status == MagickFalse) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"sharpen failed %s:%d",
__FUNCTION__,
__LINE__);
}
}
}
blur = NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "blur");
if (ngx_strlen(blur) > 0) {
ParseGeometry(blur, &geo);
if (geo.rho > ctx->radius_max || geo.sigma > ctx->sigma_max) {
ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
"As blur geometry is too large, ignored. %s:%d",
__FUNCTION__,
__LINE__);
} else {
status = MagickBlurImage(ictx->wand, geo.rho, geo.sigma);
if (status == MagickFalse) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"blur failed %s:%d",
__FUNCTION__,
__LINE__);
}
}
}
/* border. */
if (sz.bw > 0.0 || sz.bh > 0.0) {
border_wand = NewDrawingWand();
border_color = NewPixelWand();
PixelSetRed(border_color, sz.bc.r / 255.0);
PixelSetGreen(border_color, sz.bc.g / 255.0);
PixelSetBlue(border_color, sz.bc.b / 255.0);
PixelSetAlpha(border_color, sz.bc.a / 255.0);
DrawSetFillColor(border_wand, border_color);
DrawSetStrokeColor(border_wand, border_color);
DrawSetStrokeWidth(border_wand, 1);
if (sz.cw > 0.0 && sz.ch > 0.0) {
DrawRectangle(border_wand, 0, 0, sz.cw - 1, sz.bh - 1);
DrawRectangle(border_wand, 0, 0, sz.bw - 1, sz.ch - 1);
DrawRectangle(border_wand, 0, sz.ch - sz.bh, sz.cw - 1, sz.ch - 1);
DrawRectangle(border_wand, sz.cw - sz.bw, 0, sz.cw - 1, sz.ch - 1);
} else {
DrawRectangle(border_wand, 0, 0, sz.dw - 1, sz.bh - 1);
DrawRectangle(border_wand, 0, 0, sz.bw - 1, sz.dh - 1);
DrawRectangle(border_wand, 0, sz.dh - sz.bh, sz.dw - 1, sz.dh - 1);
DrawRectangle(border_wand, sz.dw - sz.bw, 0, sz.dw - 1, sz.dh - 1);
}
MagickDrawImage(ictx->wand, border_wand);
DestroyPixelWand(border_color);
DestroyDrawingWand(border_wand);
}
/* embed icon */
embedicon = NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "embedicon");
if (ctx->material_dir->len > 0 && ngx_strlen(embedicon) > 0) {
if (ngx_strstrn((u_char *)embedicon, "/", 1 - 1)) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"invalid parameter 'embedicon':%s %s:%d",
embedicon,
__FUNCTION__,
__LINE__);
DestroyString(of_orig);
return NGX_ERROR;
}
embedicon_len = ngx_strlen(embedicon);
embedicon_path_len = ctx->material_dir->len + ngx_strlen("/") + embedicon_len;
if (embedicon_path_len > sizeof(embedicon_path) - 1) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"embedicon path is too long. maximun value is %z %s:%d",
sizeof(embedicon_path) - 1,
__FUNCTION__,
__LINE__);
DestroyString(of_orig);
return NGX_ERROR;
}
p = embedicon_path;
p = ngx_cpystrn(p, ctx->material_dir->data, ctx->material_dir->len + 1);
p = ngx_cpystrn(p, (u_char *)"/", 1 + 1);
p = ngx_cpystrn(p, embedicon, embedicon_len + 1);
if ((fd = ngx_open_file(embedicon_path, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0)) == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to open embeddedicon file:%s %s:%d",
embedicon_path,
__FUNCTION__,
__LINE__);
DestroyString(of_orig);
return NGX_ERROR;
}
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to close:%s %s:%d",
embedicon_path,
__FUNCTION__,
__LINE__);
DestroyString(of_orig);
return NGX_ERROR;
}
if (ngx_strstrn(embedicon_path, "..", 2 - 1)) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"invalid embeddedicon_path:%s %s:%d",
embedicon_path,
__FUNCTION__,
__LINE__);
DestroyString(of_orig);
return NGX_ERROR;
}
icon_wand = NewMagickWand();
if (MagickReadImage(icon_wand, (char *)embedicon_path) == MagickFalse) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to read embed icon image file:%s %s:%d",
embedicon_path,
__FUNCTION__,
__LINE__);
DestroyMagickWand(icon_wand);
DestroyString(of_orig);
return NGX_ERROR;
}
MagickCompositeImageChannel(ictx->wand, AllChannels, icon_wand, OverCompositeOp, sz.ix, sz.iy);
DestroyMagickWand(icon_wand);
}
/* set params. */
q = ngx_http_small_light_parse_double(NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "q"));
if (q > 0.0) {
MagickSetImageCompressionQuality(ictx->wand, q);
}
progressive_flg = ngx_http_small_light_parse_flag(NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "progressive"));
if (progressive_flg != 0) {
MagickSetInterlaceScheme(ictx->wand, LineInterlace);
}
of = NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "of");
if (ngx_strlen(of) > 0) {
type = ngx_http_small_light_type(of);
if (type == NGX_HTTP_SMALL_LIGHT_IMAGE_NONE) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"of is invalid(%s) %s:%d",
of,
__FUNCTION__,
__LINE__);
of = (char *)ngx_http_small_light_image_exts[ictx->type - 1];
} else if (type == NGX_HTTP_SMALL_LIGHT_IMAGE_WEBP) {
#if defined(MAGICKCORE_WEBP_DELEGATE)
ictx->type = type;
#else
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"WebP is not supported %s:%d",
__FUNCTION__,
__LINE__);
of = (char *)ngx_http_small_light_image_exts[ictx->type - 1];
#endif
} else {
ictx->type = type;
}
MagickSetFormat(ictx->wand, of);
ctx->of = ngx_http_small_light_image_types[ictx->type - 1];
} else {
MagickSetFormat(ictx->wand, of_orig);
ctx->of = ctx->inf;
}
DestroyString(of_orig);
ctx->content = MagickGetImageBlob(ictx->wand, &sled_image_size);
ctx->content_length = sled_image_size;
ngx_pfree(r->pool, ctx->content_orig);
ictx->complete = 1;
return NGX_OK;
}
static ngx_int_t
ngx_http_file_cache_add_file(ngx_tree_ctx_t *ctx, ngx_str_t *name)
{
u_char *p;
ngx_fd_t fd;
ngx_int_t n;
ngx_uint_t i;
ngx_file_info_t fi;
ngx_http_cache_t c;
ngx_http_file_cache_t *cache;
ngx_http_file_cache_header_t h;
if (name->len < 2 * NGX_HTTP_CACHE_KEY_LEN) {
return NGX_ERROR;
}
ngx_memzero(&c, sizeof(ngx_http_cache_t));
fd = ngx_open_file(name->data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
ngx_open_file_n " \"%s\" failed", name->data);
return NGX_ERROR;
}
c.file.fd = fd;
c.file.name = *name;
c.file.log = ctx->log;
n = ngx_read_file(&c.file, (u_char *) &h,
sizeof(ngx_http_file_cache_header_t), 0);
if (n == NGX_ERROR) {
return NGX_ERROR;
}
if ((size_t) n < sizeof(ngx_http_file_cache_header_t)) {
ngx_log_error(NGX_LOG_CRIT, ctx->log, 0,
"cache file \"%s\" is too small", name->data);
return NGX_ERROR;
}
cache = ctx->data;
if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
ngx_fd_info_n " \"%s\" failed", name->data);
} else {
c.uniq = ngx_file_uniq(&fi);
c.valid_sec = h.valid_sec;
c.valid_msec = h.valid_msec;
c.body_start = h.body_start;
c.length = ngx_file_size(&fi);
c.fs_size = (ngx_file_fs_size(&fi) + cache->bsize - 1) / cache->bsize;
}
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, ctx->log, ngx_errno,
ngx_close_file_n " \"%s\" failed", name->data);
}
if (c.body_start == 0) {
return NGX_ERROR;
}
p = &name->data[name->len - 2 * NGX_HTTP_CACHE_KEY_LEN];
for (i = 0; i < NGX_HTTP_CACHE_KEY_LEN; i++) {
n = ngx_hextoi(p, 2);
if (n == NGX_ERROR) {
return NGX_ERROR;
}
p += 2;
c.key[i] = (u_char) n;
}
return ngx_http_file_cache_add(cache, &c);
}
static int
command_sendfile(ClientData clientData, Tcl_Interp *interp, int objc,
Tcl_Obj *const objv[])
{
ngx_buf_t *b;
ngx_chain_t out;
ngx_http_request_t *r = getrequest(clientData);
ngx_file_info_t *fi;
ngx_fd_t fd;
const char *filename;
int filename_len;
int rc;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "file");
return TCL_ERROR;
}
filename = Tcl_GetStringFromObj(objv[1], &filename_len);
fd = ngx_open_file(filename, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
Tcl_SetResult(interp, (char *) Tcl_PosixError(interp),
TCL_VOLATILE);
return TCL_ERROR;
}
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
return TCL_ERROR;
}
b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
if (b->file == NULL) {
return TCL_ERROR;
}
fi = &b->file->info;
ngx_fd_info(fd, fi);
if (!r->header_sent) {
r->headers_out.content_length_n = ngx_file_size(fi);
r->headers_out.last_modified_time = ngx_file_mtime(fi);
if (ngx_http_set_etag(r) != NGX_OK) {
return TCL_ERROR;
}
ngx_http_send_header(r);
/* TODO: CHECK RETURN */
}
r->allow_ranges = 1;
b->file_pos = 0;
b->file_last = ngx_file_size(fi);
b->in_file = 1;
b->last_buf = 1;
b->last_in_chain = 1;
b->file->fd = fd;
b->file->name.data = (u_char*)filename;
b->file->name.len = filename_len;
b->file->log = r->connection->log;
out.buf = b;
out.next = NULL;
rc = ngx_http_output_filter(r, &out);
if (rc != NGX_OK) {
ngx_tcl_set_error_code(interp, rc);
return TCL_ERROR;
}
printf("ngx_http_output_filter returns %i\n", rc); fflush(stdout);
return TCL_OK;
}
static ngx_int_t
ngx_rtmp_play_play(ngx_rtmp_session_t *s, ngx_rtmp_play_t *v)
{
ngx_rtmp_play_main_conf_t *pmcf;
ngx_rtmp_play_app_conf_t *pacf;
ngx_rtmp_play_ctx_t *ctx;
u_char *p;
ngx_rtmp_play_fmt_t *fmt, **pfmt;
ngx_str_t *pfx, *sfx;
ngx_str_t name;
ngx_uint_t n;
static ngx_str_t nosfx;
static u_char path[NGX_MAX_PATH];
pmcf = ngx_rtmp_get_module_main_conf(s, ngx_rtmp_play_module);
pacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_play_module);
if (pacf == NULL || (pacf->root.len == 0 && pacf->url == NULL)) {
goto next;
}
ngx_log_debug2(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: play name='%s' timestamp=%i",
v->name, (ngx_int_t) v->start);
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_play_module);
if (ctx && ctx->file.fd != NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"play: already playing");
goto next;
}
/* check for double-dot in v->name;
* we should not move out of play directory */
for (p = v->name; *p; ++p) {
if (ngx_path_separator(p[0]) &&
p[1] == '.' && p[2] == '.' &&
ngx_path_separator(p[3]))
{
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"play: bad name '%s'", v->name);
return NGX_ERROR;
}
}
if (ctx == NULL) {
ctx = ngx_palloc(s->connection->pool, sizeof(ngx_rtmp_play_ctx_t));
ngx_rtmp_set_ctx(s, ctx, ngx_rtmp_play_module);
}
ngx_memzero(ctx, sizeof(*ctx));
ctx->file.log = s->connection->log;
name.len = ngx_strlen(v->name);
name.data = v->name;
pfmt = pmcf->fmts.elts;
for (n = 0; n < pmcf->fmts.nelts; ++n, ++pfmt) {
fmt = *pfmt;
pfx = &fmt->pfx;
sfx = &fmt->sfx;
if (pfx->len == 0 && ctx->fmt == NULL) {
ctx->fmt = fmt;
}
if (pfx->len && name.len >= pfx->len &&
ngx_strncasecmp(pfx->data, name.data, pfx->len) == 0)
{
name.data += pfx->len;
name.len -= pfx->len;
ctx->fmt = fmt;
break;
}
if (name.len >= sfx->len &&
ngx_strncasecmp(sfx->data, name.data + name.len - sfx->len,
sfx->len) == 0)
{
ctx->fmt = fmt;
}
}
if (ctx->fmt == NULL) {
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"play: fmt not found");
goto next;
}
ctx->file.fd = NGX_INVALID_FILE;
ngx_log_error(NGX_LOG_INFO, s->connection->log, 0,
"play %s: %V", pacf->url ? "remote" : "local",
&ctx->fmt->name);
sfx = &ctx->fmt->sfx;
if (name.len >= sfx->len &&
ngx_strncasecmp(sfx->data, name.data + name.len - sfx->len,
sfx->len)
== 0)
{
sfx = &nosfx;
}
/* remote? */
if (pacf->url) {
ctx->name.data = ngx_palloc(s->connection->pool, name.len + sfx->len);
if (ctx->name.data == NULL) {
return NGX_ERROR;
}
p = ngx_sprintf(ctx->name.data, "%V%V", &name, sfx);
*p = 0;
ctx->name.len = p - ctx->name.data;
return ngx_rtmp_play_open_remote(s, v);
}
/* open local */
p = ngx_snprintf(path, sizeof(path), "%V/%V%V", &pacf->root, &name, sfx);
*p = 0;
ctx->file.fd = ngx_open_file(path, NGX_FILE_RDONLY, NGX_FILE_OPEN,
NGX_FILE_DEFAULT_ACCESS);
if (ctx->file.fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_ERR, s->connection->log, ngx_errno,
"play: error opening file '%s'", path);
ngx_rtmp_send_status(s, "NetStream.Play.StreamNotFound", "error",
"Video on demand stream not found");
return NGX_OK;
}
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: opened local file '%s'", path);
if (ngx_rtmp_play_open(s, v->start) != NGX_OK) {
return NGX_ERROR;
}
next:
return next_play(s, v);
}
ngx_int_t ngx_http_cookie_conf_each_line_proc(ngx_http_cookie_clean_conf_t *conf,
ngx_str_t *filename,
each_line_proc proc,
void * obj,
void * p_data)
{
ngx_int_t rc = NGX_OK;
ngx_file_t file;
ngx_str_t full;
ngx_fd_t fd;
off_t file_size;
ssize_t n;
ngx_buf_t buf;
u_char *s = NULL;
ngx_log_t *log = conf->ctx->log;
ngx_memzero(&file, sizeof(ngx_file_t));
ngx_memzero(&full, sizeof(ngx_str_t));
ngx_memzero(&buf, sizeof(ngx_buf_t));
fd = NGX_INVALID_FILE;
if (filename->len == 0) {
ngx_log_debug(NGX_LOG_NOTICE, log, 0, "[%s:%d], file not set", __FUNCTION__, __LINE__);
return NGX_ERROR;
}
if (ngx_http_cookie_full_name(conf->ctx, filename, &full) != NGX_OK) {
ngx_log_debug(NGX_LOG_NOTICE, log, 0, "[%s:%d], get full file name of \"%V\" failed.",__FUNCTION__, __LINE__, filename);
goto failed;
}
ngx_log_debug(NGX_LOG_NOTICE, log, 0, "[%s:%d], full file name:\"%V\".", __FUNCTION__, __LINE__, &full);
fd = ngx_open_file(full.data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
ngx_log_debug(NGX_LOG_NOTICE, log, 0, "[%s:%d], open file:\"%V\" failed.", __FUNCTION__, __LINE__, &full);
goto failed;
}
if (ngx_fd_info(fd, &file.info) == NGX_FILE_ERROR) {
ngx_log_debug(NGX_LOG_NOTICE, log, 0, "[%s:%d], get file:\"%V\" info failed.", __FUNCTION__, __LINE__, &full);
goto failed;
}
file.fd = fd;
file.name.data = full.data;
file.name.len = full.len;
file.offset = 0;
file.log = log;
buf.start = ngx_alloc(NGX_HTTP_COOKIE_CLEAN_BUFFER, log);
if (buf.start == NULL) {
ngx_log_debug(NGX_LOG_NOTICE, log, 0, "[%s:%d], alloc buffer failed.", __FUNCTION__, __LINE__);
goto failed;
}
buf.pos = buf.start;
buf.last = buf.start;
buf.end = buf.last + NGX_HTTP_COOKIE_CLEAN_BUFFER;
buf.temporary = 1;
file_size = ngx_file_size(&file.info);
while (1) {
s = ngx_http_cookie_read_one_line(&file, &buf, file_size, &n);
if (n == -1) {
ngx_log_debug(NGX_LOG_NOTICE, log, 0, "[%s:%d], read file:\"%V\" failed.", __FUNCTION__, __LINE__, &full);
goto failed;
}
if (n == 0) {
break;
}
if (proc(conf, obj, s, n, p_data) != 0) {
ngx_log_debug(NGX_LOG_NOTICE, log, 0, "[%s:%d], proc one line:\"%*s\" failed.", __FUNCTION__, __LINE__,
n, s);
goto failed;
}
ngx_log_debug(NGX_LOG_NOTICE, log, 0, "[%s:%d], proc one line:\"%*s\" succeed.", __FUNCTION__, __LINE__,
n, s);
}
ngx_log_debug(NGX_LOG_NOTICE, log, 0, "[%s:%d], proc file:\"%V\" succeed.", __FUNCTION__, __LINE__, &full);
goto done;
failed:
rc = NGX_ERROR;
done:
if (full.data != NULL) {
ngx_free(full.data);
full.data = NULL;
}
if (fd != NGX_INVALID_FILE
&& ngx_close_file(fd) == NGX_FILE_ERROR) {
rc = NGX_ERROR;
}
if (buf.start != NULL) {
ngx_free(buf.start);
buf.start = NULL;
}
return rc;
}
static ngx_int_t
ngx_http_dav_copy_dir_time(ngx_tree_ctx_t *ctx, ngx_str_t *path)
{
u_char *p, *dir;
size_t len;
ngx_http_dav_copy_ctx_t *copy;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
"http copy dir time: \"%s\"", path->data);
copy = ctx->data;
len = copy->path.len + path->len;
dir = ngx_alloc(len + 1, ctx->log);
if (dir == NULL) {
return NGX_ABORT;
}
p = ngx_cpymem(dir, copy->path.data, copy->path.len);
(void) ngx_cpystrn(p, path->data + copy->len, path->len - copy->len + 1);
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
"http copy dir time to: \"%s\"", dir);
#if (NGX_WIN32)
{
ngx_fd_t fd;
fd = ngx_open_file(dir, NGX_FILE_RDWR, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
(void) ngx_http_dav_error(ctx->log, ngx_errno, 0, ngx_open_file_n, dir);
goto failed;
}
if (ngx_set_file_time(NULL, fd, ctx->mtime) != NGX_OK) {
ngx_log_error(NGX_LOG_ALERT, ctx->log, ngx_errno,
ngx_set_file_time_n " \"%s\" failed", dir);
}
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, ctx->log, ngx_errno,
ngx_close_file_n " \"%s\" failed", dir);
}
}
failed:
#else
if (ngx_set_file_time(dir, 0, ctx->mtime) != NGX_OK) {
ngx_log_error(NGX_LOG_ALERT, ctx->log, ngx_errno,
ngx_set_file_time_n " \"%s\" failed", dir);
}
#endif
ngx_free(dir);
return NGX_OK;
}
static ngx_int_t
ngx_http_dav_copy_file(ngx_tree_ctx_t *ctx, u_char *from, u_char *to)
{
off_t size;
ssize_t n;
ngx_fd_t fd, cfd;
ngx_int_t rc;
u_char buf[NGX_HTTP_DAV_COPY_BLOCK];
fd = ngx_open_file(from, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
(void) ngx_http_dav_error(ctx->log, ngx_errno, 0, ngx_open_file_n,
from);
return NGX_ERROR;
}
cfd = ngx_open_file(to, NGX_FILE_WRONLY, NGX_FILE_CREATE_OR_OPEN,
ctx->access);
rc = NGX_ERROR;
if (cfd == NGX_INVALID_FILE) {
(void) ngx_http_dav_error(ctx->log, ngx_errno, 0, ngx_open_file_n, to);
goto failed;
}
for (size = ctx->size; size > 0; size -= n) {
n = ngx_read_fd(fd, buf, NGX_HTTP_DAV_COPY_BLOCK);
if (n == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, ctx->log, ngx_errno,
ngx_read_fd_n " \"%s\" failed", from);
goto failed;
}
if (ngx_write_fd(cfd, buf, n) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, ctx->log, ngx_errno,
ngx_write_fd_n " \"%s\" failed", to);
goto failed;
}
}
if (ngx_set_file_time(to, cfd, ctx->mtime) != NGX_OK) {
ngx_log_error(NGX_LOG_ALERT, ctx->log, ngx_errno,
ngx_set_file_time_n " \"%s\" failed", to);
goto failed;
}
if (ngx_close_file(cfd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, ctx->log, ngx_errno,
ngx_close_file_n " \"%s\" failed", to);
goto failed;
}
rc = NGX_OK;
failed:
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, ctx->log, ngx_errno,
ngx_close_file_n " \"%s\" failed", from);
}
return rc;
}
void
ngx_http_file_cache_update_header(ngx_http_request_t *r)
{
ssize_t n;
ngx_err_t err;
ngx_file_t file;
ngx_file_info_t fi;
ngx_http_cache_t *c;
ngx_http_file_cache_header_t h;
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http file cache update header");
c = r->cache;
ngx_memzero(&file, sizeof(ngx_file_t));
file.name = c->file.name;
file.log = r->connection->log;
file.fd = ngx_open_file(file.name.data, NGX_FILE_RDWR, NGX_FILE_OPEN, 0);
if (file.fd == NGX_INVALID_FILE) {
err = ngx_errno;
/* cache file may have been deleted */
if (err == NGX_ENOENT) {
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http file cache \"%s\" not found",
file.name.data);
return;
}
ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
ngx_open_file_n " \"%s\" failed", file.name.data);
return;
}
/*
* make sure cache file wasn't replaced;
* if it was, do nothing
*/
if (ngx_fd_info(file.fd, &fi) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
ngx_fd_info_n " \"%s\" failed", file.name.data);
goto done;
}
if (c->uniq != ngx_file_uniq(&fi)
|| c->length != ngx_file_size(&fi))
{
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http file cache \"%s\" changed",
file.name.data);
goto done;
}
n = ngx_read_file(&file, (u_char *) &h,
sizeof(ngx_http_file_cache_header_t), 0);
if (n == NGX_ERROR) {
goto done;
}
if ((size_t) n != sizeof(ngx_http_file_cache_header_t)) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0,
ngx_read_file_n " read only %z of %z from \"%s\"",
n, sizeof(ngx_http_file_cache_header_t), file.name.data);
goto done;
}
if (h.last_modified != c->last_modified
|| h.crc32 != c->crc32
|| h.header_start != c->header_start
|| h.body_start != c->body_start)
{
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http file cache \"%s\" content changed",
file.name.data);
goto done;
}
/*
* update cache file header with new data,
* notably h.valid_sec and h.date
*/
ngx_memzero(&h, sizeof(ngx_http_file_cache_header_t));
h.valid_sec = c->valid_sec;
h.last_modified = c->last_modified;
h.date = c->date;
h.crc32 = c->crc32;
h.valid_msec = (u_short) c->valid_msec;
h.header_start = (u_short) c->header_start;
h.body_start = (u_short) c->body_start;
(void) ngx_write_file(&file, (u_char *) &h,
sizeof(ngx_http_file_cache_header_t), 0);
done:
if (ngx_close_file(file.fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
ngx_close_file_n " \"%s\" failed", file.name.data);
}
}
char *ngx_conf_parse(ngx_conf_t *cf, ngx_str_t *filename)
{
int m, rc, found, valid;
char *rv;
void *conf, **confp;
ngx_fd_t fd;
ngx_str_t *name;
ngx_conf_file_t *prev;
ngx_command_t *cmd;
#if (NGX_SUPPRESS_WARN)
fd = NGX_INVALID_FILE;
prev = NULL;
#endif
if (filename) {
/* open configuration file */
fd = ngx_open_file(filename->data, NGX_FILE_RDONLY, NGX_FILE_OPEN);
if (fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_EMERG, cf->log, ngx_errno,
ngx_open_file_n " %s failed", filename->data);
return NGX_CONF_ERROR;
}
prev = cf->conf_file;
if (!(cf->conf_file = ngx_palloc(cf->pool, sizeof(ngx_conf_file_t)))) {
return NGX_CONF_ERROR;
}
if (ngx_fd_info(fd, &cf->conf_file->file.info) == -1) {
ngx_log_error(NGX_LOG_EMERG, cf->log, ngx_errno,
ngx_fd_info_n " %s failed", filename->data);
}
if (!(cf->conf_file->buffer = ngx_create_temp_buf(cf->pool, 1024))) {
return NGX_CONF_ERROR;
}
cf->conf_file->file.fd = fd;
cf->conf_file->file.name.len = filename->len;
cf->conf_file->file.name.data = filename->data;
cf->conf_file->file.offset = 0;
cf->conf_file->file.log = cf->log;;
cf->conf_file->line = 1;
}
for ( ;; ) {
rc = ngx_conf_read_token(cf);
/*
* ngx_conf_read_token() returns NGX_OK, NGX_ERROR,
* NGX_CONF_FILE_DONE or NGX_CONF_BLOCK_DONE
*/
#if 0
ngx_log_debug(cf->log, "token %d" _ rc);
#endif
if (rc == NGX_ERROR) {
break;
}
if (rc != NGX_OK) {
break;
}
if (cf->handler) {
/* custom handler, i.e. used in http "types { ... }" directive */
rv = (*cf->handler)(cf, NULL, cf->handler_conf);
if (rv == NGX_CONF_OK) {
continue;
} else if (rv == NGX_CONF_ERROR) {
rc = NGX_ERROR;
break;
} else {
ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
"%s in %s:%d",
rv,
cf->conf_file->file.name.data,
cf->conf_file->line);
rc = NGX_ERROR;
break;
}
}
name = (ngx_str_t *) cf->args->elts;
found = 0;
for (m = 0; rc != NGX_ERROR && !found && ngx_modules[m]; m++) {
/* look up the directive in the appropriate modules */
if (ngx_modules[m]->type != NGX_CONF_MODULE
&& ngx_modules[m]->type != cf->module_type)
{
continue;
}
cmd = ngx_modules[m]->commands;
if (cmd == NULL) {
continue;
}
while (cmd->name.len) {
if (name->len == cmd->name.len
&& ngx_strcmp(name->data, cmd->name.data) == 0)
{
found = 1;
#if 0
ngx_log_debug(cf->log, "command '%s'" _ cmd->name.data);
#endif
/* is the directive's location right ? */
if ((cmd->type & cf->cmd_type) == 0) {
ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
"directive \"%s\" in %s:%d "
"is not allowed here",
name->data,
cf->conf_file->file.name.data,
cf->conf_file->line);
rc = NGX_ERROR;
break;
}
/* is the directive's argument count right ? */
if (cmd->type & NGX_CONF_ANY) {
valid = 1;
} else if (cmd->type & NGX_CONF_FLAG) {
if (cf->args->nelts == 2) {
valid = 1;
} else {
valid = 0;
}
} else if (cmd->type & NGX_CONF_1MORE) {
if (cf->args->nelts > 1) {
valid = 1;
} else {
valid = 0;
}
} else if (cmd->type & NGX_CONF_2MORE) {
if (cf->args->nelts > 2) {
valid = 1;
} else {
valid = 0;
}
} else if (cf->args->nelts <= 10
&& (cmd->type
& argument_number[cf->args->nelts - 1]))
{
valid = 1;
} else {
valid = 0;
}
if (!valid) {
ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
"invalid number arguments in "
"directive \"%s\" in %s:%d",
name->data,
cf->conf_file->file.name.data,
cf->conf_file->line);
rc = NGX_ERROR;
break;
}
/* set up the directive's configuration context */
conf = NULL;
if (cmd->type & NGX_DIRECT_CONF) {
conf = ((void **) cf->ctx)[ngx_modules[m]->index];
} else if (cmd->type & NGX_MAIN_CONF) {
conf = &(((void **) cf->ctx)[ngx_modules[m]->index]);
} else if (cf->ctx) {
confp = *(void **) ((char *) cf->ctx + cmd->conf);
if (confp) {
conf = confp[ngx_modules[m]->ctx_index];
}
}
rv = cmd->set(cf, cmd, conf);
#if 0
ngx_log_debug(cf->log, "rv: %d" _ rv);
#endif
if (rv == NGX_CONF_OK) {
break;
} else if (rv == NGX_CONF_ERROR) {
rc = NGX_ERROR;
break;
} else {
ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
"the \"%s\" directive %s in %s:%d",
name->data, rv,
cf->conf_file->file.name.data,
cf->conf_file->line);
rc = NGX_ERROR;
break;
}
}
cmd++;
}
}
if (!found) {
ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
"unknown directive \"%s\" in %s:%d",
name->data,
cf->conf_file->file.name.data,
cf->conf_file->line);
rc = NGX_ERROR;
break;
}
if (rc == NGX_ERROR) {
break;
}
}
if (filename) {
cf->conf_file = prev;
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
ngx_close_file_n " %s failed",
cf->conf_file->file.name.data);
return NGX_CONF_ERROR;
}
}
if (rc == NGX_ERROR) {
return NGX_CONF_ERROR;
}
return NGX_CONF_OK;
}
ngx_cycle_t *
ngx_init_cycle(ngx_cycle_t *old_cycle)
{
void *rv;
char **senv, **env;
ngx_uint_t i, n;
ngx_log_t *log;
ngx_time_t *tp;
ngx_conf_t conf;
ngx_pool_t *pool;
ngx_cycle_t *cycle, **old;
ngx_shm_zone_t *shm_zone, *oshm_zone;
ngx_list_part_t *part, *opart;
ngx_open_file_t *file;
ngx_listening_t *ls, *nls;
ngx_core_conf_t *ccf, *old_ccf;
ngx_core_module_t *module;
char hostname[NGX_MAXHOSTNAMELEN];
/* 更新时区 */
ngx_timezone_update();
/* force localtime update with a new timezone */
tp = ngx_timeofday();
tp->sec = 0;
/* 更新时间 */
ngx_time_update();
/* 创建内存池pool，并初始化 */
log = old_cycle->log;
pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log);
if (pool == NULL) {
return NULL;
}
pool->log = log;
/* 创建ngx_cycle_t 结构体变量 */
cycle = ngx_pcalloc(pool, sizeof(ngx_cycle_t));
if (cycle == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
/* 初始化ngx_cycle_t 结构体变量 cycle */
cycle->pool = pool;
cycle->log = log;
cycle->old_cycle = old_cycle;
cycle->conf_prefix.len = old_cycle->conf_prefix.len;
cycle->conf_prefix.data = ngx_pstrdup(pool, &old_cycle->conf_prefix);
if (cycle->conf_prefix.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->prefix.len = old_cycle->prefix.len;
cycle->prefix.data = ngx_pstrdup(pool, &old_cycle->prefix);
if (cycle->prefix.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->conf_file.len = old_cycle->conf_file.len;
cycle->conf_file.data = ngx_pnalloc(pool, old_cycle->conf_file.len + 1);
if (cycle->conf_file.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
ngx_cpystrn(cycle->conf_file.data, old_cycle->conf_file.data,
old_cycle->conf_file.len + 1);
cycle->conf_param.len = old_cycle->conf_param.len;
cycle->conf_param.data = ngx_pstrdup(pool, &old_cycle->conf_param);
if (cycle->conf_param.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
n = old_cycle->paths.nelts ? old_cycle->paths.nelts : 10;
cycle->paths.elts = ngx_pcalloc(pool, n * sizeof(ngx_path_t *));
if (cycle->paths.elts == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->paths.nelts = 0;
cycle->paths.size = sizeof(ngx_path_t *);
cycle->paths.nalloc = n;
cycle->paths.pool = pool;
if (old_cycle->open_files.part.nelts) {
n = old_cycle->open_files.part.nelts;
for (part = old_cycle->open_files.part.next; part; part = part->next) {
n += part->nelts;
}
} else {
n = 20;
}
if (ngx_list_init(&cycle->open_files, pool, n, sizeof(ngx_open_file_t))
!= NGX_OK)
{
ngx_destroy_pool(pool);
return NULL;
}
if (old_cycle->shared_memory.part.nelts) {
n = old_cycle->shared_memory.part.nelts;
for (part = old_cycle->shared_memory.part.next; part; part = part->next)
{
n += part->nelts;
}
} else {
n = 1;
}
if (ngx_list_init(&cycle->shared_memory, pool, n, sizeof(ngx_shm_zone_t))
!= NGX_OK)
{
ngx_destroy_pool(pool);
return NULL;
}
n = old_cycle->listening.nelts ? old_cycle->listening.nelts : 10;
cycle->listening.elts = ngx_pcalloc(pool, n * sizeof(ngx_listening_t));
if (cycle->listening.elts == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->listening.nelts = 0;
cycle->listening.size = sizeof(ngx_listening_t);
cycle->listening.nalloc = n;
cycle->listening.pool = pool;
ngx_queue_init(&cycle->reusable_connections_queue);
cycle->conf_ctx = ngx_pcalloc(pool, ngx_max_module * sizeof(void *));
if (cycle->conf_ctx == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
if (gethostname(hostname, NGX_MAXHOSTNAMELEN) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "gethostname() failed");
ngx_destroy_pool(pool);
return NULL;
}
/* on Linux gethostname() silently truncates name that does not fit */
hostname[NGX_MAXHOSTNAMELEN - 1] = '\0';
cycle->hostname.len = ngx_strlen(hostname);
cycle->hostname.data = ngx_pnalloc(pool, cycle->hostname.len);
if (cycle->hostname.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
ngx_strlow(cycle->hostname.data, (u_char *) hostname, cycle->hostname.len);
/* 遍历所有core模块 */
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->type != NGX_CORE_MODULE) {
continue;
}
module = ngx_modules[i]->ctx;
/* 若有core模块实现了create_conf()，则就调用它，并返回地址 */
if (module->create_conf) {
rv = module->create_conf(cycle);
if (rv == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->conf_ctx[ngx_modules[i]->index] = rv;
}
}
senv = environ;
ngx_memzero(&conf, sizeof(ngx_conf_t));
/* STUB: init array ? */
conf.args = ngx_array_create(pool, 10, sizeof(ngx_str_t));
if (conf.args == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
conf.temp_pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log);
if (conf.temp_pool == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
conf.ctx = cycle->conf_ctx;
conf.cycle = cycle;
conf.pool = pool;
conf.log = log;
conf.module_type = NGX_CORE_MODULE;
conf.cmd_type = NGX_MAIN_CONF;
#if 0
log->log_level = NGX_LOG_DEBUG_ALL;
#endif
/* 配置文件解析 */
if (ngx_conf_param(&conf) != NGX_CONF_OK) {
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
if (ngx_conf_parse(&conf, &cycle->conf_file) != NGX_CONF_OK) {
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
if (ngx_test_config && !ngx_quiet_mode) {
ngx_log_stderr(0, "the configuration file %s syntax is ok",
cycle->conf_file.data);
}
/* 遍历所有core模块，并调用core模块的init_conf()函数 */
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->type != NGX_CORE_MODULE) {
continue;
}
module = ngx_modules[i]->ctx;
if (module->init_conf) {
if (module->init_conf(cycle, cycle->conf_ctx[ngx_modules[i]->index])
== NGX_CONF_ERROR)
{
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
}
}
if (ngx_process == NGX_PROCESS_SIGNALLER) {
return cycle;
}
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
if (ngx_test_config) {
if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) {
goto failed;
}
} else if (!ngx_is_init_cycle(old_cycle)) {
/*
* we do not create the pid file in the first ngx_init_cycle() call
* because we need to write the demonized process pid
*/
old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx,
ngx_core_module);
if (ccf->pid.len != old_ccf->pid.len
|| ngx_strcmp(ccf->pid.data, old_ccf->pid.data) != 0)
{
/* new pid file name */
if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) {
goto failed;
}
ngx_delete_pidfile(old_cycle);
}
}
if (ngx_test_lockfile(cycle->lock_file.data, log) != NGX_OK) {
goto failed;
}
/* 初始化paths 数组 */
if (ngx_create_paths(cycle, ccf->user) != NGX_OK) {
goto failed;
}
if (ngx_log_open_default(cycle) != NGX_OK) {
goto failed;
}
/* open the new files */
part = &cycle->open_files.part;
file = part->elts;
/* 遍历open_file 链表中每一个文件，并打开该文件 */
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].name.len == 0) {
continue;
}
file[i].fd = ngx_open_file(file[i].name.data,
NGX_FILE_APPEND,
NGX_FILE_CREATE_OR_OPEN,
NGX_FILE_DEFAULT_ACCESS);
ngx_log_debug3(NGX_LOG_DEBUG_CORE, log, 0,
"log: %p %d \"%s\"",
&file[i], file[i].fd, file[i].name.data);
if (file[i].fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_open_file_n " \"%s\" failed",
file[i].name.data);
goto failed;
}
#if !(NGX_WIN32)
if (fcntl(file[i].fd, F_SETFD, FD_CLOEXEC) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
"fcntl(FD_CLOEXEC) \"%s\" failed",
file[i].name.data);
goto failed;
}
#endif
}
cycle->log = &cycle->new_log;
pool->log = &cycle->new_log;
/* 创建共享内存并初始化 */
/* create shared memory */
part = &cycle->shared_memory.part;
shm_zone = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
shm_zone = part->elts;
i = 0;
}
if (shm_zone[i].shm.size == 0) {
ngx_log_error(NGX_LOG_EMERG, log, 0,
"zero size shared memory zone \"%V\"",
&shm_zone[i].shm.name);
goto failed;
}
shm_zone[i].shm.log = cycle->log;
opart = &old_cycle->shared_memory.part;
oshm_zone = opart->elts;
/*
* 新的共享内存与旧的共享内存链表进行比较，
* 相同则保留，不同创建新的，旧的被释放
*/
for (n = 0; /* void */ ; n++) {
if (n >= opart->nelts) {
if (opart->next == NULL) {
break;
}
opart = opart->next;
oshm_zone = opart->elts;
n = 0;
}
if (shm_zone[i].shm.name.len != oshm_zone[n].shm.name.len) {
continue;
}
if (ngx_strncmp(shm_zone[i].shm.name.data,
oshm_zone[n].shm.name.data,
shm_zone[i].shm.name.len)
!= 0)
{
continue;
}
if (shm_zone[i].tag == oshm_zone[n].tag
&& shm_zone[i].shm.size == oshm_zone[n].shm.size)
{
shm_zone[i].shm.addr = oshm_zone[n].shm.addr;
if (shm_zone[i].init(&shm_zone[i], oshm_zone[n].data)
!= NGX_OK)
{
goto failed;
}
goto shm_zone_found;
}
ngx_shm_free(&oshm_zone[n].shm);
break;
}
if (ngx_shm_alloc(&shm_zone[i].shm) != NGX_OK) {
goto failed;
}
if (ngx_init_zone_pool(cycle, &shm_zone[i]) != NGX_OK) {
goto failed;
}
if (shm_zone[i].init(&shm_zone[i], NULL) != NGX_OK) {
goto failed;
}
shm_zone_found:
continue;
}
/* 遍历listening 数组，并打开所有监听 */
/* handle the listening sockets */
if (old_cycle->listening.nelts) {
ls = old_cycle->listening.elts;
for (i = 0; i < old_cycle->listening.nelts; i++) {
ls[i].remain = 0;
}
nls = cycle->listening.elts;
for (n = 0; n < cycle->listening.nelts; n++) {
for (i = 0; i < old_cycle->listening.nelts; i++) {
if (ls[i].ignore) {
continue;
}
if (ngx_cmp_sockaddr(nls[n].sockaddr, nls[n].socklen,
ls[i].sockaddr, ls[i].socklen, 1)
== NGX_OK)
{
nls[n].fd = ls[i].fd;
nls[n].previous = &ls[i];
ls[i].remain = 1;
if (ls[i].backlog != nls[n].backlog) {
nls[n].listen = 1;
}
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
/*
* FreeBSD, except the most recent versions,
* could not remove accept filter
*/
nls[n].deferred_accept = ls[i].deferred_accept;
if (ls[i].accept_filter && nls[n].accept_filter) {
if (ngx_strcmp(ls[i].accept_filter,
nls[n].accept_filter)
!= 0)
{
nls[n].delete_deferred = 1;
nls[n].add_deferred = 1;
}
} else if (ls[i].accept_filter) {
nls[n].delete_deferred = 1;
} else if (nls[n].accept_filter) {
nls[n].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (ls[i].deferred_accept && !nls[n].deferred_accept) {
nls[n].delete_deferred = 1;
} else if (ls[i].deferred_accept != nls[n].deferred_accept)
{
nls[n].add_deferred = 1;
}
#endif
break;
}
}
if (nls[n].fd == (ngx_socket_t) -1) {
nls[n].open = 1;
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
if (nls[n].accept_filter) {
nls[n].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (nls[n].deferred_accept) {
nls[n].add_deferred = 1;
}
#endif
}
}
} else {
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
ls[i].open = 1;
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
if (ls[i].accept_filter) {
ls[i].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (ls[i].deferred_accept) {
ls[i].add_deferred = 1;
}
#endif
}
}
/* 打开监听 */
if (ngx_open_listening_sockets(cycle) != NGX_OK) {
goto failed;
}
if (!ngx_test_config) {
ngx_configure_listening_sockets(cycle);
}
/* 提交新的cycle配置，并调用所有模块的 init_module */
/* commit the new cycle configuration */
if (!ngx_use_stderr) {
(void) ngx_log_redirect_stderr(cycle);
}
pool->log = cycle->log;
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->init_module) {
if (ngx_modules[i]->init_module(cycle) != NGX_OK) {
/* fatal */
exit(1);
}
}
}
/* 关闭或删除不被使用的old_cycle 资源 */
/* close and delete stuff that lefts from an old cycle */
/* free the unnecessary shared memory */
opart = &old_cycle->shared_memory.part;
oshm_zone = opart->elts;
for (i = 0; /* void */ ; i++) {
if (i >= opart->nelts) {
if (opart->next == NULL) {
goto old_shm_zone_done;
}
opart = opart->next;
oshm_zone = opart->elts;
i = 0;
}
part = &cycle->shared_memory.part;
shm_zone = part->elts;
for (n = 0; /* void */ ; n++) {
if (n >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
shm_zone = part->elts;
n = 0;
}
if (oshm_zone[i].shm.name.len == shm_zone[n].shm.name.len
&& ngx_strncmp(oshm_zone[i].shm.name.data,
shm_zone[n].shm.name.data,
oshm_zone[i].shm.name.len)
== 0)
{
goto live_shm_zone;
}
}
ngx_shm_free(&oshm_zone[i].shm);
live_shm_zone:
continue;
}
old_shm_zone_done:
/* close the unnecessary listening sockets */
ls = old_cycle->listening.elts;
for (i = 0; i < old_cycle->listening.nelts; i++) {
if (ls[i].remain || ls[i].fd == (ngx_socket_t) -1) {
continue;
}
if (ngx_close_socket(ls[i].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_close_socket_n " listening socket on %V failed",
&ls[i].addr_text);
}
#if (NGX_HAVE_UNIX_DOMAIN)
if (ls[i].sockaddr->sa_family == AF_UNIX) {
u_char *name;
name = ls[i].addr_text.data + sizeof("unix:") - 1;
ngx_log_error(NGX_LOG_WARN, cycle->log, 0,
"deleting socket %s", name);
if (ngx_delete_file(name) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
ngx_delete_file_n " %s failed", name);
}
}
#endif
}
/* close the unnecessary open files */
part = &old_cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) {
continue;
}
if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
}
ngx_destroy_pool(conf.temp_pool);
if (ngx_process == NGX_PROCESS_MASTER || ngx_is_init_cycle(old_cycle)) {
/*
* perl_destruct() frees environ, if it is not the same as it was at
* perl_construct() time, therefore we save the previous cycle
* environment before ngx_conf_parse() where it will be changed.
*/
env = environ;
environ = senv;
ngx_destroy_pool(old_cycle->pool);
cycle->old_cycle = NULL;
environ = env;
return cycle;
}
if (ngx_temp_pool == NULL) {
ngx_temp_pool = ngx_create_pool(128, cycle->log);
if (ngx_temp_pool == NULL) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
"could not create ngx_temp_pool");
exit(1);
}
n = 10;
ngx_old_cycles.elts = ngx_pcalloc(ngx_temp_pool,
n * sizeof(ngx_cycle_t *));
if (ngx_old_cycles.elts == NULL) {
exit(1);
}
ngx_old_cycles.nelts = 0;
ngx_old_cycles.size = sizeof(ngx_cycle_t *);
ngx_old_cycles.nalloc = n;
ngx_old_cycles.pool = ngx_temp_pool;
ngx_cleaner_event.handler = ngx_clean_old_cycles;
ngx_cleaner_event.log = cycle->log;
ngx_cleaner_event.data = &dumb;
dumb.fd = (ngx_socket_t) -1;
}
ngx_temp_pool->log = cycle->log;
old = ngx_array_push(&ngx_old_cycles);
if (old == NULL) {
exit(1);
}
*old = old_cycle;
if (!ngx_cleaner_event.timer_set) {
ngx_add_timer(&ngx_cleaner_event, 30000);
ngx_cleaner_event.timer_set = 1;
}
return cycle;
failed:
if (!ngx_is_init_cycle(old_cycle)) {
old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx,
ngx_core_module);
if (old_ccf->environment) {
environ = old_ccf->environment;
}
}
/* rollback the new cycle configuration */
part = &cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) {
continue;
}
if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
}
if (ngx_test_config) {
ngx_destroy_cycle_pools(&conf);
return NULL;
}
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
if (ls[i].fd == (ngx_socket_t) -1 || !ls[i].open) {
continue;
}
if (ngx_close_socket(ls[i].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_close_socket_n " %V failed",
&ls[i].addr_text);
}
}
ngx_destroy_cycle_pools(&conf);
return NULL;
}
/*
* 函数功能：配置文件解析；
* 支持三种不同的解析类型：
* 1、解析配置文件；
* 2、解析block块设置；
* 3、解析命令行配置；
*/
char *
ngx_conf_parse(ngx_conf_t *cf, ngx_str_t *filename)
{
char *rv;
ngx_fd_t fd;
ngx_int_t rc;
ngx_buf_t buf;
ngx_conf_file_t *prev, conf_file;
enum {
parse_file = 0,
parse_block,
parse_param
} type;
#if (NGX_SUPPRESS_WARN)
fd = NGX_INVALID_FILE;
prev = NULL;
#endif
if (filename) {/* 若解析的是配置文件 */
/* open configuration file */
/* 打开配置文件 */
fd = ngx_open_file(filename->data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno,
ngx_open_file_n " \"%s\" failed",
filename->data);
return NGX_CONF_ERROR;
}
prev = cf->conf_file;
cf->conf_file = &conf_file;
if (ngx_fd_info(fd, &cf->conf_file->file.info) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cf->log, ngx_errno,
ngx_fd_info_n " \"%s\" failed", filename->data);
}
cf->conf_file->buffer = &buf;
buf.start = ngx_alloc(NGX_CONF_BUFFER, cf->log);
if (buf.start == NULL) {
goto failed;
}
buf.pos = buf.start;
buf.last = buf.start;
buf.end = buf.last + NGX_CONF_BUFFER;
buf.temporary = 1;
/* 复制文件属性及文件内容 */
cf->conf_file->file.fd = fd;
cf->conf_file->file.name.len = filename->len;
cf->conf_file->file.name.data = filename->data;
cf->conf_file->file.offset = 0;
cf->conf_file->file.log = cf->log;
cf->conf_file->line = 1;
type = parse_file; /* 解析的类型是配置文件 */
} else if (cf->conf_file->file.fd != NGX_INVALID_FILE) {
type = parse_block; /* 解析的类型是block块 */
} else {
type = parse_param; /* 解析的类型是命令行配置 */
}
for ( ;; ) {
/* 语法分析函数 */
rc = ngx_conf_read_token(cf);
/*
* ngx_conf_read_token() may return
*
* NGX_ERROR there is error
* NGX_OK the token terminated by ";" was found
* NGX_CONF_BLOCK_START the token terminated by "{" was found
* NGX_CONF_BLOCK_DONE the "}" was found
* NGX_CONF_FILE_DONE the configuration file is done
*/
if (rc == NGX_ERROR) {
goto done;
}
/* 解析block块设置 */
if (rc == NGX_CONF_BLOCK_DONE) {
if (type != parse_block) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "unexpected \"}\"");
goto failed;
}
goto done;
}
/* 解析配置文件 */
if (rc == NGX_CONF_FILE_DONE) {
if (type == parse_block) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"unexpected end of file, expecting \"}\"");
goto failed;
}
goto done;
}
if (rc == NGX_CONF_BLOCK_START) {
if (type == parse_param) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"block directives are not supported "
"in -g option");
goto failed;
}
}
/* rc == NGX_OK || rc == NGX_CONF_BLOCK_START */
/* 自定义指令处理函数 */
if (cf->handler) {
/*
* the custom handler, i.e., that is used in the http's
* "types { ... }" directive
*/
if (rc == NGX_CONF_BLOCK_START) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "unexpected \"{\"");
goto failed;
}
/* 命令行配置处理函数 */
rv = (*cf->handler)(cf, NULL, cf->handler_conf);
if (rv == NGX_CONF_OK) {
continue;
}
if (rv == NGX_CONF_ERROR) {
goto failed;
}
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, rv);
goto failed;
}
/* 若自定义指令处理函数handler为NULL，则调用Nginx内建的指令解析机制 */
rc = ngx_conf_handler(cf, rc);
if (rc == NGX_ERROR) {
goto failed;
}
}
failed:
rc = NGX_ERROR;
done:
if (filename) {/* 若是配置文件 */
if (cf->conf_file->buffer->start) {
ngx_free(cf->conf_file->buffer->start);
}
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
ngx_close_file_n " %s failed",
filename->data);
return NGX_CONF_ERROR;
}
cf->conf_file = prev;
}
if (rc == NGX_ERROR) {
return NGX_CONF_ERROR;
}
return NGX_CONF_OK;
}
static ngx_int_t
ngx_rtmp_record_node_open(ngx_rtmp_session_t *s,
ngx_rtmp_record_rec_ctx_t *rctx)
{
ngx_rtmp_record_app_conf_t *rracf;
ngx_err_t err;
ngx_str_t path;
rracf = rctx->conf;
if (rctx->file.fd != NGX_INVALID_FILE) {
return NGX_AGAIN;
}
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"record: %V opening", &rracf->id);
ngx_memzero(rctx, sizeof(*rctx));
rctx->conf = rracf;
rctx->last = *ngx_cached_time;
rctx->timestamp = ngx_cached_time->sec;
ngx_rtmp_record_make_path(s, rctx, &path);
ngx_memzero(&rctx->file, sizeof(rctx->file));
rctx->file.offset = 0;
rctx->file.log = s->connection->log;
rctx->file.fd = ngx_open_file(path.data, NGX_FILE_WRONLY, NGX_FILE_TRUNCATE,
NGX_FILE_DEFAULT_ACCESS);
if (rctx->file.fd == NGX_INVALID_FILE) {
err = ngx_errno;
if (err != NGX_ENOENT) {
ngx_log_error(NGX_LOG_CRIT, s->connection->log, err,
"record: %V failed to open file '%V'",
&rracf->id, &path);
}
ngx_rtmp_record_notify_error(s, rctx);
return NGX_OK;
}
if (rracf->lock_file) {
err = ngx_lock_fd(rctx->file.fd);
if (err) {
ngx_log_error(NGX_LOG_CRIT, s->connection->log, err,
"record: %V lock failed", &rracf->id);
}
}
ngx_log_debug2(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"record: %V opened '%V'", &rracf->id, &path);
if (rracf->notify) {
ngx_rtmp_send_status(s, "NetStream.Record.Start", "status",
rracf->id.data ? (char *) rracf->id.data : "");
}
return NGX_OK;
}
static ngx_int_t
ngx_rtmp_play_next_entry(ngx_rtmp_session_t *s, ngx_rtmp_play_t *v)
{
ngx_rtmp_play_app_conf_t *pacf;
ngx_rtmp_play_ctx_t *ctx;
ngx_rtmp_play_entry_t *pe;
u_char *p;
static u_char path[NGX_MAX_PATH + 1];
pacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_play_module);
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_play_module);
for ( ;; ) {
if (ctx->file.fd != NGX_INVALID_FILE) {
ngx_close_file(ctx->file.fd);
ctx->file.fd = NGX_INVALID_FILE;
}
if (ctx->file_id) {
ngx_rtmp_play_cleanup_local_file(s);
}
ctx->nentry = (ctx->nentry == NGX_CONF_UNSET_UINT ?
0 : ctx->nentry + 1);
if (ctx->nentry >= pacf->entries.nelts) {
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: all entries failed");
ngx_rtmp_send_status(s, "NetStream.Play.StreamNotFound", "error",
"Video on demand stream not found");
break;
}
pe = ngx_rtmp_play_get_current_entry(s);
ngx_log_debug4(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: trying %s entry %ui/%uz '%V'",
pe->url ? "remote" : "local",
ctx->nentry + 1, pacf->entries.nelts,
pe->url ? &pe->url->url : pe->root);
/* open remote */
if (pe->url) {
return ngx_rtmp_play_open_remote(s, v);
}
/* open local */
p = ngx_snprintf(path, NGX_MAX_PATH, "%V/%s%V",
pe->root, v->name + ctx->pfx_size, &ctx->sfx);
*p = 0;
ctx->file.fd = ngx_open_file(path, NGX_FILE_RDONLY, NGX_FILE_OPEN,
NGX_FILE_DEFAULT_ACCESS);
if (ctx->file.fd == NGX_INVALID_FILE) {
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, ngx_errno,
"play: error opening file '%s'", path);
continue;
}
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: open local file '%s'", path);
if (ngx_rtmp_play_open(s, v->start) != NGX_OK) {
return NGX_ERROR;
}
break;
}
return next_play(s, v);
}
static ngx_int_t
ngx_open_and_stat_file(u_char *name, ngx_open_file_info_t *of, ngx_log_t *log)
{
ngx_fd_t fd;
ngx_file_info_t fi;
of->fd = NGX_INVALID_FILE;
if (of->test_dir) {
if (ngx_file_info(name, &fi) == -1) {
of->err = ngx_errno;
return NGX_ERROR;
}
of->uniq = ngx_file_uniq(&fi);
of->mtime = ngx_file_mtime(&fi);
of->size = ngx_file_size(&fi);
of->is_dir = ngx_is_dir(&fi);
of->is_file = ngx_is_file(&fi);
of->is_link = ngx_is_link(&fi);
of->is_exec = ngx_is_exec(&fi);
if (of->is_dir) {
return NGX_OK;
}
}
fd = ngx_open_file(name, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
of->err = ngx_errno;
return NGX_ERROR;
}
if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, log, ngx_errno,
ngx_fd_info_n " \"%s\" failed", name);
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
ngx_close_file_n " \"%s\" failed", name);
}
return NGX_ERROR;
}
if (ngx_is_dir(&fi)) {
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
ngx_close_file_n " \"%s\" failed", name);
}
fd = NGX_INVALID_FILE;
}
of->fd = fd;
of->uniq = ngx_file_uniq(&fi);
of->mtime = ngx_file_mtime(&fi);
of->size = ngx_file_size(&fi);
of->is_dir = ngx_is_dir(&fi);
of->is_file = ngx_is_file(&fi);
of->is_link = ngx_is_link(&fi);
of->is_exec = ngx_is_exec(&fi);
return NGX_OK;
}
/* The load_jpeg function is based on Imlib2 loader. */
ngx_int_t ngx_http_small_light_load_jpeg(
void **dest_data, int *width, int *height, const ngx_http_request_t *r,
const char *filename, int hint_w, int hint_h)
{
int w, h;
struct jpeg_decompress_struct cinfo;
struct ImLib_JPEG_error_mgr jerr;
FILE *f;
ngx_int_t fd;
int denom;
DATA8 *ptr, *line[16], *data;
DATA32 *ptr2, *dest;
int x, y, l, i, scans;
*dest_data = NULL;
*width = *height = 0;
fd = ngx_open_file(filename, NGX_FILE_RDONLY, NGX_FILE_OPEN, NGX_FILE_DEFAULT_ACCESS);
if (fd == NGX_INVALID_FILE) {
return NGX_ERROR;
}
f = fdopen(fd, "rb");
cinfo.err = jpeg_std_error(&(jerr.pub));
jerr.pub.error_exit = _JPEGFatalErrorHandler;
jerr.pub.emit_message = _JPEGErrorHandler2;
jerr.pub.output_message = _JPEGErrorHandler;
if (sigsetjmp(jerr.setjmp_buffer, 1)) {
jpeg_destroy_decompress(&cinfo);
ngx_close_file(fd);
fclose(f);
return NGX_ERROR;
}
jpeg_create_decompress(&cinfo);
jpeg_stdio_src(&cinfo, f);
jpeg_read_header(&cinfo, TRUE);
cinfo.do_fancy_upsampling = FALSE;
cinfo.do_block_smoothing = FALSE;
jpeg_start_decompress(&cinfo);
w = cinfo.output_width;
h = cinfo.output_height;
denom = w / hint_w;
if (denom > h / hint_h) {
denom = h / hint_h;
}
denom = denom >= 1 ? denom : 1;
denom = denom <= 8 ? denom : 8;
jpeg_destroy_decompress(&cinfo);
fseek(f, 0, SEEK_SET);
jpeg_create_decompress(&cinfo);
jpeg_stdio_src(&cinfo, f);
jpeg_read_header(&cinfo, TRUE);
cinfo.do_fancy_upsampling = FALSE;
cinfo.do_block_smoothing = FALSE;
cinfo.scale_denom = denom;
jpeg_start_decompress(&cinfo);
w = cinfo.output_width;
h = cinfo.output_height;
if ((cinfo.rec_outbuf_height > 16) || (cinfo.output_components <= 0) ||
!IMAGE_DIMENSIONS_OK(w, h))
{
jpeg_destroy_decompress(&cinfo);
ngx_close_file(fd);
fclose(f);
return NGX_ERROR;
}
data = ngx_palloc(r->pool, w * 16 * cinfo.output_components);
if (!data) {
jpeg_destroy_decompress(&cinfo);
ngx_close_file(fd);
fclose(f);
return NGX_ERROR;
}
/* must set the im->data member before callign progress function */
ptr2 = dest = ngx_palloc(r->pool, w * h * sizeof(DATA32));
if (!dest) {
jpeg_destroy_decompress(&cinfo);
ngx_close_file(fd);
fclose(f);
return NGX_ERROR;
}
if (cinfo.output_components > 1) {
for (i = 0; i < cinfo.rec_outbuf_height; i++) {
line[i] = data + (i * w * cinfo.output_components);
}
for (l = 0; l < h; l += cinfo.rec_outbuf_height) {
jpeg_read_scanlines(&cinfo, line, cinfo.rec_outbuf_height);
scans = cinfo.rec_outbuf_height;
if ((h - l) < scans) {
scans = h - l;
}
ptr = data;
for (y = 0; y < scans; y++) {
for (x = 0; x < w; x++) {
*ptr2 =
(0xff000000) |
((ptr[0]) << 16) |
((ptr[1]) << 8) |
(ptr[2]);
ptr += cinfo.output_components;
ptr2++;
}
}
}
} else if (cinfo.output_components == 1) {
for (i = 0; i < cinfo.rec_outbuf_height; i++) {
line[i] = data + (i * w);
}
for (l = 0; l < h; l += cinfo.rec_outbuf_height) {
jpeg_read_scanlines(&cinfo, line, cinfo.rec_outbuf_height);
scans = cinfo.rec_outbuf_height;
if ((h - l) < scans) {
scans = h - l;
}
ptr = data;
for (y = 0; y < scans; y++) {
for (x = 0; x < w; x++) {
*ptr2 =
(0xff000000) |
((ptr[0]) << 16) |
((ptr[0]) << 8) |
(ptr[0]);
ptr++;
ptr2++;
}
}
}
}
jpeg_finish_decompress(&cinfo);
jpeg_destroy_decompress(&cinfo);
ngx_close_file(fd);
fclose(f);
*dest_data = dest;
*width = w;
*height = h;
return NGX_OK;
}
static ngx_int_t ngx_hls_handler(ngx_http_request_t *r)
{
//ngx_log_t *log = r->connection->log;
if(!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))){
return NGX_HTTP_NOT_ALLOWED;
}
ngx_http_hls_loc_conf_t *elcf = ngx_http_get_module_loc_conf(r,ngx_http_hls_module);
char* media_type = ngx_http_hls_convert_string(elcf->media_type);
char* media_path = ngx_http_hls_convert_string(elcf->media_path);
//char *media_type = (char*)elcf->media_type.data;
//char *media_path = (char*)elcf->media_path.data;
ngx_int_t rc = ngx_http_discard_request_body(r);
if(rc != NGX_OK){
return rc;
}
if(strcmp(media_type,"live") == 0){
//TODO:Live media.
}
else{
ngx_str_t media_file;
ngx_str_t media_start;
ngx_str_t media_end;
ngx_http_arg(r, (u_char *)"media", 5, &media_file);
rc = ngx_http_arg(r,(u_char *)"start",5,&media_start);
ngx_http_arg(r, (u_char *)"end", 3 , &media_end);
if(rc == NGX_DECLINED || media_start.len == 0){
char filename[512];
bzero(filename,512);
ngx_str_t type = ngx_string("application/x-mpegURL");//m3u8文件的content type
ngx_snprintf((u_char*)filename,1024,"%s%V.m3u8",media_path,&media_file);
//M3U8文件不存在，目前采用直接返回错误的方式，后期采用根据TS文件创建新的M3U8
if(access((char*)filename,F_OK) == -1){
ngx_log_error(NGX_LOG_CRIT,r->connection->log,0,"File[%s] is not exist!media_path = %s,media_file=%V",filename,media_path,&media_file);
//r->headers_out.status = NGX_HTTP_NOT_FOUND;
//rc = ngx_http_send_header(r);
return NGX_HTTP_NOT_FOUND;
}
else{
ngx_chain_t *out = ngx_pcalloc(r->pool,sizeof(ngx_chain_t));
ngx_buf_t *b;
//b = ngx_create_temp_buf(r->pool,sizeof(ngx_buf_t));
b = ngx_pcalloc(r->pool,sizeof(ngx_buf_t));
if(b == NULL){
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
b->in_file = 1;
b->file = ngx_pcalloc(r->pool,sizeof(ngx_file_t));
b->file->fd = ngx_open_file(filename,NGX_FILE_RDONLY|NGX_FILE_NONBLOCK, NGX_FILE_OPEN, 0);
if(b->file->fd == -1){
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
b->file->name.data = (u_char*)filename;
b->file->name.len = sizeof(filename) -1;
if(ngx_file_info(filename,&b->file->info) == NGX_FILE_ERROR){
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = b->file->info.st_size;
r->headers_out.content_type = type;
b->file_pos = 0;
b->file_last = b->file->info.st_size;
b->last_in_chain = 1;
b->file->log = r->connection->log;
b->last_buf = 1;
//清理文件句柄
/*
ngx_pool_cleanup_t *cln = ngx_pool_cleanup_add(r->pool,sizeof(ngx_pool_cleanup_file_t));
if(cln == NULL){
return NGX_ERROR;
}
cln->handler = ngx_pool_cleanup_file;
ngx_pool_cleanup_file_t *clnf = cln->data;
clnf->fd = b->file->fd;
clnf->name = b->file->name.data;
clnf->log = r->pool->log;
*/
out->buf = b;
out->next = NULL;
rc = ngx_http_send_header(r);
if(rc == NGX_ERROR || rc > NGX_OK || r->header_only)
{
return rc;
}
return ngx_http_output_filter(r,out);
}
}
else{
ngx_str_t type = ngx_string("video/mp2t"); //ts文件的content type
//ngx_str_t type = ngx_string("application/octet-stream");
char filename[512];
bzero(filename,512);
ngx_snprintf((u_char*)filename,512,"%s%V.ts",media_path,&media_file);
ngx_log_error(NGX_LOG_CRIT,r->connection->log,0,"File[%s] is not exist!media_path = %s,media_file=%V",filename,media_path,&media_file);
r->allow_ranges = 1; //开启range选项
char *start = ngx_http_hls_convert_string(media_start);
char *end = ngx_http_hls_convert_string(media_end);
ngx_log_error(NGX_LOG_CRIT,r->connection->log,0,"start=%s;end=%s",start,end);
ngx_chain_t *out = ngx_pcalloc(r->pool,sizeof(ngx_chain_t));
ngx_buf_t *b = ngx_pcalloc(r->pool,sizeof(ngx_buf_t));
if(b == NULL){
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
b->in_file = 1;
b->file = ngx_pcalloc(r->pool,sizeof(ngx_file_t));
b->file->fd = ngx_open_file(filename,NGX_FILE_RDONLY|NGX_FILE_NONBLOCK, NGX_FILE_OPEN,0);
if(b->file->fd == -1){
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
b->file->name.data = (u_char*)filename;
b->file->name.len = sizeof(filename)-1;
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = atol(end)-atol(start);
ngx_log_error(NGX_LOG_CRIT,r->connection->log,0,"%d",r->headers_out.content_length_n);
r->headers_out.content_type = type;
b->file_pos = atol(start);
b->file_last= atol(end);
b->last_in_chain = 1;
b->file->log = r->connection->log;
b->last_buf = 1;
out->buf = b;
out->next = NULL;
rc = ngx_http_send_header(r);
if(rc == NGX_ERROR || rc > NGX_OK || r->header_only)
{
return rc;
}
return ngx_http_output_filter(r,out);
}
}
return NGX_OK;
}
static void
ngx_pipe_log(ngx_cycle_t *cycle, ngx_open_pipe_t *op)
{
ngx_int_t n_bytes_read;
u_char *read_buf;
size_t read_buf_len = 65536;
ngx_fd_t log_fd = NGX_INVALID_FILE;
#ifdef T_PIPE_NO_DISPLAY
size_t title_len;
#endif
ngx_pipe_rollback_conf_t rbcf;
ngx_file_info_t sb;
size_t one_day = 24 * 60 * 60;
ngx_pid = ngx_getpid();
rbcf.last_open_time = 0;
rbcf.last_suit_time = 0;
rbcf.log_size = 0;
if (ngx_pipe_rollback_parse_args(cycle, op, &rbcf) != NGX_OK) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, "log rollback parse error");
return;
}
read_buf = ngx_pcalloc(cycle->pool, read_buf_len);
if (read_buf == NULL) {
return;
}
//set title
ngx_setproctitle((char *) op->cmd);
#ifdef T_PIPE_NO_DISPLAY
title_len = ngx_strlen(ngx_os_argv[0]);
#if (NGX_SOLARIS)
#else
ngx_memset((u_char *) ngx_os_argv[0], NGX_SETPROCTITLE_PAD, title_len);
ngx_cpystrn((u_char *) ngx_os_argv[0], op->cmd, title_len);
#endif
#endif
for (;;)
{
if (ngx_terminate == 1) {
return;
}
n_bytes_read = ngx_read_fd(0, read_buf, read_buf_len);
if (n_bytes_read == 0) {
return;
}
if (errno == EINTR) {
continue;
} else if (n_bytes_read < 0) {
return;
}
rbcf.time_now = ngx_pipe_get_now_sec();
if (NULL != rbcf.suitpath) {
if (rbcf.time_now / one_day >
rbcf.last_suit_time / one_day) {
ngx_pipe_create_suitpath(cycle, &rbcf);
}
}
if (log_fd >= 0) {
if (rbcf.interval > 0) {
if (((rbcf.time_now - rbcf.adjust_time) / rbcf.interval) >
(rbcf.last_open_time / rbcf.interval)) {
//need check rollback
ngx_close_file(log_fd);
log_fd = NGX_INVALID_FILE;
ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
"need check rollback time [%s]", rbcf.logname);
ngx_pipe_do_rollback(cycle, &rbcf);
}
}
}
if (log_fd >= 0 && rbcf.log_max_size > 0 &&
rbcf.log_size >= rbcf.log_max_size) {
ngx_close_file(log_fd);
log_fd = NGX_INVALID_FILE;
ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
"need check rollback size [%s] [%d]",
rbcf.logname, rbcf.log_size);
ngx_pipe_do_rollback(cycle, &rbcf);
}
/* If there is no log file open then open a new one.
* */
if (log_fd < 0) {
ngx_pipe_create_subdirs(rbcf.logname, cycle);
if (rbcf.interval > 0 && rbcf.last_open_time == 0
&& ((rbcf.time_now - rbcf.adjust_time_raw) / rbcf.interval < rbcf.time_now / rbcf.interval)) { /*just check
when time is after interval and befor adjust_time_raw, fix when no backup file, do rollback
*/
//need check last rollback time, because other process may do rollback after when it adjust time more than this process
ngx_pipe_get_last_rollback_time(&rbcf);
} else {
rbcf.last_open_time = ngx_pipe_get_now_sec();
}
log_fd = ngx_open_file(rbcf.logname, NGX_FILE_APPEND, NGX_FILE_CREATE_OR_OPEN,
NGX_PIPE_FILE_ACCESS);
if (log_fd < 0) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"open [%s] failed", rbcf.logname);
return;
}
if (0 == ngx_fd_info(log_fd, &sb)) {
rbcf.log_size = sb.st_size;
}
}
if (ngx_write_fd(log_fd, read_buf, n_bytes_read) != n_bytes_read) {
if (errno != EINTR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"write to [%s] failed", rbcf.logname);
return;
}
}
rbcf.log_size += n_bytes_read;
}
}