static ngx_int_t
ngx_http_eval_handler(ngx_http_request_t *r)
{
size_t loc_len;
ngx_str_t args;
ngx_str_t subrequest_uri;
ngx_uint_t flags;
ngx_http_core_loc_conf_t *clcf;
ngx_http_eval_loc_conf_t *ecf;
ngx_http_eval_ctx_t *ctx;
ngx_http_request_t *sr;
ngx_int_t rc;
ngx_http_post_subrequest_t *psr;
ngx_http_eval_block_t *block;
u_char *p;
if(r != r->main && r->uri.len > 6 && r->uri.data[0] == '/' && r->uri.data[1] == 'e'
&& r->uri.data[2] == 'v' && r->uri.data[3] == 'a' && r->uri.data[4] == 'l'
&& r->uri.data[5] == '_')
{
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
loc_len = r->valid_location ? clcf->name.len : 0;
if(r->uri.len != loc_len) {
r->uri.data += loc_len;
r->uri.len -= loc_len;
}
else {
r->uri.len = 1;
}
}
ecf = ngx_http_get_module_loc_conf(r, ngx_http_eval_module);
if(ecf->blocks == NULL || !ecf->blocks->nelts) {
return NGX_DECLINED;
}
ctx = ngx_http_get_module_ctx(r, ngx_http_eval_module);
if(ctx == NULL) {
ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_eval_ctx_t));
if (ctx == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ctx->base_conf = ecf;
ctx->current_block = ecf->blocks->elts;
ctx->last_block = ctx->current_block + ecf->blocks->nelts - 1;
ngx_http_set_ctx(r, ctx, ngx_http_eval_module);
}
if(ctx->done) {
ctx->in_progress = 0;
if(ctx->current_block == ctx->last_block) {
if(!ecf->escalate || ctx->status == NGX_OK || ctx->status == NGX_HTTP_OK) {
return NGX_DECLINED;
}
return ctx->status;
}
ctx->current_block++;
}
if(ctx->in_progress) {
#if defined nginx_version && nginx_version >= 8042
return NGX_DONE;
#else
return NGX_AGAIN;
#endif
}
/*
* Advance to block which has at least one variable
*/
while(ctx->current_block->variables == NULL || ctx->current_block->variables->nelts == 0) {
if(ctx->current_block == ctx->last_block) {
return NGX_DECLINED;
}
ctx->current_block++;
}
block = ctx->current_block;
psr = ngx_palloc(r->pool, sizeof(ngx_http_post_subrequest_t));
if (psr == NULL) {
return NGX_ERROR;
}
if(ngx_http_eval_init_variables(r, ctx, block) != NGX_OK) {
return NGX_ERROR;
}
args.len = r->args.len;
args.data = r->args.data;
flags = 0;
subrequest_uri.len = block->eval_location.len + r->uri.len;
p = subrequest_uri.data = ngx_palloc(r->pool, subrequest_uri.len);
if(p == NULL) {
return NGX_ERROR;
}
p = ngx_copy(p, block->eval_location.data, block->eval_location.len);
p = ngx_copy(p, r->uri.data, r->uri.len);
if (ngx_http_parse_unsafe_uri(r, &subrequest_uri, &args, &flags) != NGX_OK) {
return NGX_ERROR;
}
psr->handler = ngx_http_eval_post_subrequest_handler;
psr->data = ctx;
flags |= NGX_HTTP_SUBREQUEST_IN_MEMORY|NGX_HTTP_SUBREQUEST_WAITED;
rc = ngx_http_subrequest(r, &subrequest_uri, &args, &sr, psr, flags);
if (rc == NGX_ERROR || rc == NGX_DONE) {
return rc;
}
/*
* create a fake request body instead of discarding the real one
* in order to avoid attempts to read it
*/
sr->request_body = ngx_pcalloc(r->pool, sizeof(ngx_http_request_body_t));
if (sr->request_body == NULL) {
return NGX_ERROR;
}
ctx->in_progress = 1;
ctx->done = 0;
/*
* Wait for subrequest to complete
*/
#if defined nginx_version && nginx_version >= 8042
return NGX_DONE;
#else
return NGX_AGAIN;
#endif
}
static ngx_int_t
ngx_http_eval_handler(ngx_http_request_t *r)
{
size_t loc_len;
ngx_str_t args;
ngx_str_t subrequest_uri;
ngx_uint_t flags;
ngx_http_core_loc_conf_t *clcf;
ngx_http_eval_loc_conf_t *ecf;
ngx_http_eval_ctx_t *ctx;
ngx_http_request_t *sr;
ngx_int_t rc;
ngx_http_post_subrequest_t *psr;
u_char *p;
if(r != r->main && ngx_memn2cmp(r->uri.data, "/eval_", r->uri.len, 6 - 1) == 0) {
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
loc_len = r->valid_location ? clcf->name.len : 0;
if(r->uri.len != loc_len) {
r->uri.data += loc_len;
r->uri.len -= loc_len;
}
else {
r->uri.len = 1;
}
}
ecf = ngx_http_get_module_loc_conf(r, ngx_http_eval_module);
if(ecf->variables == NULL || !ecf->variables->nelts) {
return NGX_DECLINED;
}
ctx = ngx_http_get_module_ctx(r, ngx_http_eval_module);
if(ctx == NULL) {
ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_eval_ctx_t));
if (ctx == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ctx->base_conf = ecf;
ngx_http_set_ctx(r, ctx, ngx_http_eval_module);
}
if(ctx->done) {
if(!ecf->escalate || ctx->status == NGX_OK || ctx->status == NGX_HTTP_OK) {
return NGX_DECLINED;
}
return ctx->status;
}
if(ctx->in_progress) {
return NGX_AGAIN;
}
psr = ngx_palloc(r->pool, sizeof(ngx_http_post_subrequest_t));
if (psr == NULL) {
return NGX_ERROR;
}
if(ngx_http_eval_init_variables(r, ctx, ecf) != NGX_OK) {
return NGX_ERROR;
}
args.len = 0;
args.data = NULL;
flags = 0;
subrequest_uri.len = ecf->eval_location.len + r->uri.len;
p = subrequest_uri.data = ngx_palloc(r->pool, subrequest_uri.len);
if(p == NULL) {
return NGX_ERROR;
}
p = ngx_copy(p, ecf->eval_location.data, ecf->eval_location.len);
p = ngx_copy(p, r->uri.data, r->uri.len);
if (ngx_http_parse_unsafe_uri(r, &subrequest_uri, &args, &flags) != NGX_OK) {
return NGX_ERROR;
}
psr->handler = ngx_http_eval_post_subrequest_handler;
psr->data = ctx;
flags |= NGX_HTTP_SUBREQUEST_IN_MEMORY|NGX_HTTP_SUBREQUEST_WAITED;
rc = ngx_http_subrequest(r, &subrequest_uri, &args, &sr, psr, flags);
if (rc == NGX_ERROR || rc == NGX_DONE) {
return rc;
}
sr->discard_body = 1;
ctx->in_progress = 1;
/*
* Wait for subrequest to complete
*/
return NGX_AGAIN;
}
static ngx_int_t
ngx_http_eval_handler(ngx_http_request_t *r)
{
/* size_t loc_len; */
ngx_str_t args;
ngx_str_t subrequest_uri;
ngx_uint_t flags;
/* ngx_http_core_loc_conf_t *clcf; */
ngx_http_eval_loc_conf_t *ecf;
ngx_http_eval_ctx_t *ctx;
ngx_http_eval_ctx_t *sr_ctx;
ngx_http_request_t *sr;
ngx_int_t rc;
ngx_http_post_subrequest_t *psr;
u_char *p;
/*
if(r != r->main) {
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
loc_len = r->valid_location ? clcf->name.len : 0;
if(r->uri.len != loc_len) {
r->uri.data += loc_len;
r->uri.len -= loc_len;
}
else {
r->uri.len = 1;
}
}
*/
ecf = ngx_http_get_module_loc_conf(r, ngx_http_eval_module);
if(ecf->variables == NULL || !ecf->variables->nelts) {
return NGX_DECLINED;
}
ctx = ngx_http_get_module_ctx(r, ngx_http_eval_module);
if(ctx == NULL) {
ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_eval_ctx_t));
if (ctx == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ctx->base_conf = ecf;
ngx_http_set_ctx(r, ctx, ngx_http_eval_module);
}
if (ctx->done) {
dd("subrequest done");
if(!ecf->escalate || ctx->status == NGX_OK || ctx->status == NGX_HTTP_OK) {
return NGX_DECLINED;
}
dd("status: %d", (int) ctx->status);
return ctx->status;
}
if (ctx->in_progress) {
dd("still in progress");
return NGX_DONE;
}
psr = ngx_palloc(r->pool, sizeof(ngx_http_post_subrequest_t));
if (psr == NULL) {
return NGX_ERROR;
}
if(ngx_http_eval_init_variables(r, ctx, ecf) != NGX_OK) {
return NGX_ERROR;
}
args = r->args;
flags = 0;
subrequest_uri.len = ecf->eval_location.len + r->uri.len;
p = subrequest_uri.data = ngx_palloc(r->pool, subrequest_uri.len);
if(p == NULL) {
return NGX_ERROR;
}
p = ngx_copy(p, ecf->eval_location.data, ecf->eval_location.len);
p = ngx_copy(p, r->uri.data, r->uri.len);
if (ngx_http_parse_unsafe_uri(r, &subrequest_uri, &args, &flags) != NGX_OK) {
return NGX_ERROR;
}
psr->handler = ngx_http_eval_post_subrequest_handler;
psr->data = ctx;
flags |= NGX_HTTP_SUBREQUEST_WAITED;
dd("subrequest in memory : %d", (int) ecf->subrequest_in_memory);
if (ecf->subrequest_in_memory) {
flags |= NGX_HTTP_SUBREQUEST_IN_MEMORY;
} else {
}
dd("issue subrequest");
rc = ngx_http_subrequest(r, &subrequest_uri, &args, &sr, psr, flags);
if (rc == NGX_ERROR || rc == NGX_DONE) {
return rc;
}
sr->discard_body = 1;
ctx->in_progress = 1;
/* XXX we don't allow eval in subrequests, i think? */
sr_ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_eval_ctx_t));
if (sr_ctx == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_http_set_ctx(sr, sr_ctx, ngx_http_eval_module);
dd("wait for subrequest to complete");
return NGX_DONE;
}
