Mercurial > hg > nginx-quic
view src/http/v3/ngx_http_v3_module.c @ 8559:75daac63f798 quic
QUIC: fixed dead store assignment.
Found by Clang Static Analyzer.
author | Sergey Kandaurov <pluknet@nginx.com> |
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date | Tue, 24 Aug 2021 13:03:46 +0300 |
parents | 4f922f611135 |
children | 33226ac61076 |
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/* * Copyright (C) Nginx, Inc. * Copyright (C) Roman Arutyunyan */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> static void *ngx_http_v3_create_srv_conf(ngx_conf_t *cf); static char *ngx_http_v3_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child); static void *ngx_http_v3_create_loc_conf(ngx_conf_t *cf); static char *ngx_http_v3_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child); static char *ngx_http_v3_push(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static ngx_command_t ngx_http_v3_commands[] = { { ngx_string("http3_max_table_capacity"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_size_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, max_table_capacity), NULL }, { ngx_string("http3_max_blocked_streams"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_num_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, max_blocked_streams), NULL }, { ngx_string("http3_max_concurrent_pushes"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_num_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, max_concurrent_pushes), NULL }, { ngx_string("http3_max_uni_streams"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_num_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, max_uni_streams), NULL }, { ngx_string("http3_push"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, ngx_http_v3_push, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL }, { ngx_string("http3_push_preload"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_v3_loc_conf_t, push_preload), NULL }, ngx_null_command }; static ngx_http_module_t ngx_http_v3_module_ctx = { NULL, /* preconfiguration */ NULL, /* postconfiguration */ NULL, /* create main configuration */ NULL, /* init main configuration */ ngx_http_v3_create_srv_conf, /* create server configuration */ ngx_http_v3_merge_srv_conf, /* merge server configuration */ ngx_http_v3_create_loc_conf, /* create location configuration */ ngx_http_v3_merge_loc_conf /* merge location configuration */ }; ngx_module_t ngx_http_v3_module = { NGX_MODULE_V1, &ngx_http_v3_module_ctx, /* module context */ ngx_http_v3_commands, /* module directives */ NGX_HTTP_MODULE, /* module type */ NULL, /* init master */ NULL, /* init module */ NULL, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ NULL, /* exit process */ NULL, /* exit master */ NGX_MODULE_V1_PADDING }; static void * ngx_http_v3_create_srv_conf(ngx_conf_t *cf) { ngx_http_v3_srv_conf_t *h3scf; h3scf = ngx_pcalloc(cf->pool, sizeof(ngx_http_v3_srv_conf_t)); if (h3scf == NULL) { return NULL; } h3scf->max_table_capacity = NGX_CONF_UNSET_SIZE; h3scf->max_blocked_streams = NGX_CONF_UNSET_UINT; h3scf->max_concurrent_pushes = NGX_CONF_UNSET_UINT; h3scf->max_uni_streams = NGX_CONF_UNSET_UINT; return h3scf; } static char * ngx_http_v3_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) { ngx_http_v3_srv_conf_t *prev = parent; ngx_http_v3_srv_conf_t *conf = child; ngx_conf_merge_size_value(conf->max_table_capacity, prev->max_table_capacity, 16384); ngx_conf_merge_uint_value(conf->max_blocked_streams, prev->max_blocked_streams, 16); ngx_conf_merge_uint_value(conf->max_concurrent_pushes, prev->max_concurrent_pushes, 10); ngx_conf_merge_uint_value(conf->max_uni_streams, prev->max_uni_streams, 3); return NGX_CONF_OK; } static void * ngx_http_v3_create_loc_conf(ngx_conf_t *cf) { ngx_http_v3_loc_conf_t *h3lcf; h3lcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_v3_loc_conf_t)); if (h3lcf == NULL) { return NULL; } /* * set by ngx_pcalloc(): * * h3lcf->pushes = NULL; */ h3lcf->push_preload = NGX_CONF_UNSET; h3lcf->push = NGX_CONF_UNSET; return h3lcf; } static char * ngx_http_v3_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) { ngx_http_v3_loc_conf_t *prev = parent; ngx_http_v3_loc_conf_t *conf = child; ngx_conf_merge_value(conf->push, prev->push, 1); if (conf->push && conf->pushes == NULL) { conf->pushes = prev->pushes; } ngx_conf_merge_value(conf->push_preload, prev->push_preload, 0); return NGX_CONF_OK; } static char * ngx_http_v3_push(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_v3_loc_conf_t *h3lcf = conf; ngx_str_t *value; ngx_http_complex_value_t *cv; ngx_http_compile_complex_value_t ccv; value = cf->args->elts; if (ngx_strcmp(value[1].data, "off") == 0) { if (h3lcf->pushes) { return "\"off\" parameter cannot be used with URI"; } if (h3lcf->push == 0) { return "is duplicate"; } h3lcf->push = 0; return NGX_CONF_OK; } if (h3lcf->push == 0) { return "URI cannot be used with \"off\" parameter"; } h3lcf->push = 1; if (h3lcf->pushes == NULL) { h3lcf->pushes = ngx_array_create(cf->pool, 1, sizeof(ngx_http_complex_value_t)); if (h3lcf->pushes == NULL) { return NGX_CONF_ERROR; } } cv = ngx_array_push(h3lcf->pushes); if (cv == NULL) { return NGX_CONF_ERROR; } ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); ccv.cf = cf; ccv.value = &value[1]; ccv.complex_value = cv; if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { return NGX_CONF_ERROR; } return NGX_CONF_OK; }