mirror of
https://github.com/haproxy/haproxy.git
synced 2026-02-18 18:19:39 -05:00
cb63e899d9
Add unlikely() hints on error paths in init, conv and fetch functions. Remove unnecessary zero-initialization of local buffers that are always written before use. Fix indentation in da_haproxy_checkinst() and remove unused loop variable initialization.
581 lines
16 KiB
C
581 lines
16 KiB
C
#include <stdio.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <errno.h>
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#include <haproxy/api.h>
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#include <haproxy/arg.h>
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#include <haproxy/cfgparse.h>
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#include <haproxy/errors.h>
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#include <haproxy/global.h>
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#include <haproxy/http.h>
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#include <haproxy/http_ana.h>
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#include <haproxy/http_fetch.h>
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#include <haproxy/http_htx.h>
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#include <haproxy/htx.h>
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#include <haproxy/sample.h>
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#include <haproxy/tools.h>
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#include <dac.h>
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#define ATLASTOKSZ PATH_MAX
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#define ATLASMAPNM "/da_map_sch_data"
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static struct {
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void *atlasimgptr;
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void *atlasmap;
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char *jsonpath;
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char *cookiename;
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size_t cookienamelen;
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size_t cachesize;
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int atlasfd;
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da_atlas_t atlas;
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da_evidence_id_t useragentid;
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da_severity_t loglevel;
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size_t maxhdrlen;
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char separator;
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unsigned char daset:1;
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} global_deviceatlas = {
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.loglevel = 0,
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.jsonpath = 0,
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.cookiename = 0,
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.cookienamelen = 0,
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.cachesize = 0,
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.atlasmap = NULL,
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.atlasfd = -1,
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.useragentid = 0,
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.maxhdrlen = 0,
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.daset = 0,
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.separator = '|',
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};
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__decl_thread(HA_SPINLOCK_T dadwsch_lock);
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static int da_json_file(char **args, int section_type, struct proxy *curpx,
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const struct proxy *defpx, const char *file, int line,
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char **err)
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{
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if (*(args[1]) == 0) {
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memprintf(err, "deviceatlas json file : expects a json path.\n");
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return -1;
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}
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global_deviceatlas.jsonpath = strdup(args[1]);
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if (unlikely(global_deviceatlas.jsonpath == NULL)) {
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memprintf(err, "deviceatlas json file : out of memory.\n");
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return -1;
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}
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return 0;
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}
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static int da_log_level(char **args, int section_type, struct proxy *curpx,
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const struct proxy *defpx, const char *file, int line,
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char **err)
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{
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int loglevel;
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if (*(args[1]) == 0) {
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memprintf(err, "deviceatlas log level : expects an integer argument.\n");
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return -1;
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}
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loglevel = atol(args[1]);
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if (loglevel < 0 || loglevel > 3) {
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memprintf(err, "deviceatlas log level : expects a log level between 0 and 3, %s given.\n", args[1]);
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return -1;
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} else {
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global_deviceatlas.loglevel = (da_severity_t)loglevel;
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}
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return 0;
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}
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static int da_property_separator(char **args, int section_type, struct proxy *curpx,
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const struct proxy *defpx, const char *file, int line,
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char **err)
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{
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if (*(args[1]) == 0) {
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memprintf(err, "deviceatlas property separator : expects a character argument.\n");
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return -1;
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}
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global_deviceatlas.separator = *args[1];
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return 0;
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}
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static int da_properties_cookie(char **args, int section_type, struct proxy *curpx,
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const struct proxy *defpx, const char *file, int line,
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char **err)
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{
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if (*(args[1]) == 0) {
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memprintf(err, "deviceatlas cookie name : expects a string argument.\n");
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return -1;
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} else {
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global_deviceatlas.cookiename = strdup(args[1]);
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if (unlikely(global_deviceatlas.cookiename == NULL)) {
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memprintf(err, "deviceatlas cookie name : out of memory.\n");
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return -1;
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}
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}
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global_deviceatlas.cookienamelen = strlen(global_deviceatlas.cookiename);
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return 0;
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}
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static int da_cache_size(char **args, int section_type, struct proxy *curpx,
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const struct proxy *defpx, const char *file, int line,
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char **err)
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{
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int cachesize;
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if (*(args[1]) == 0) {
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memprintf(err, "deviceatlas cache size : expects an integer argument.\n");
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return -1;
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}
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cachesize = atol(args[1]);
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if (cachesize < 0 || cachesize > DA_CACHE_MAX) {
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memprintf(err, "deviceatlas cache size : expects a cache size between 0 and %d, %s given.\n", DA_CACHE_MAX, args[1]);
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return -1;
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} else {
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#ifdef APINOCACHE
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fprintf(stdout, "deviceatlas cache size : no-op, its support is disabled.\n");
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#endif
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global_deviceatlas.cachesize = (size_t)cachesize;
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}
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return 0;
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}
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static size_t da_haproxy_read(void *ctx, size_t len, char *buf)
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{
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return fread(buf, 1, len, ctx);
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}
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static da_status_t da_haproxy_seek(void *ctx, off_t off)
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{
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return fseek(ctx, off, SEEK_SET) != -1 ? DA_OK : DA_SYS;
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}
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static void da_haproxy_log(da_severity_t severity, da_status_t status,
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const char *fmt, va_list args)
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{
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if (global_deviceatlas.loglevel && severity <= global_deviceatlas.loglevel) {
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char logbuf[256];
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vsnprintf(logbuf, sizeof(logbuf), fmt, args);
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ha_warning("deviceatlas : %s.\n", logbuf);
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}
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}
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#define DA_COOKIENAME_DEFAULT "DAPROPS"
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/*
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* module init / deinit functions. Returns 0 if OK, or a combination of ERR_*.
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*/
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static int init_deviceatlas(void)
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{
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int err_code = ERR_NONE;
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if (global_deviceatlas.jsonpath != 0) {
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FILE *jsonp;
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da_property_decl_t extraprops[] = {{0, 0}};
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size_t atlasimglen;
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da_status_t status;
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jsonp = fopen(global_deviceatlas.jsonpath, "r");
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if (unlikely(jsonp == 0)) {
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ha_alert("deviceatlas : '%s' json file has invalid path or is not readable.\n",
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global_deviceatlas.jsonpath);
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err_code |= ERR_ALERT | ERR_FATAL;
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goto out;
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}
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da_init();
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da_seterrorfunc(da_haproxy_log);
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status = da_atlas_compile(jsonp, da_haproxy_read, da_haproxy_seek,
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&global_deviceatlas.atlasimgptr, &atlasimglen);
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fclose(jsonp);
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if (unlikely(status != DA_OK)) {
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ha_alert("deviceatlas : '%s' json file is invalid.\n",
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global_deviceatlas.jsonpath);
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free(global_deviceatlas.atlasimgptr);
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da_fini();
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err_code |= ERR_ALERT | ERR_FATAL;
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goto out;
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}
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status = da_atlas_open(&global_deviceatlas.atlas, extraprops,
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global_deviceatlas.atlasimgptr, atlasimglen);
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if (unlikely(status != DA_OK)) {
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ha_alert("deviceatlas : data could not be compiled.\n");
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free(global_deviceatlas.atlasimgptr);
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da_fini();
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err_code |= ERR_ALERT | ERR_FATAL;
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goto out;
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}
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global_deviceatlas.atlas.config.cache_size = global_deviceatlas.cachesize;
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if (global_deviceatlas.cookiename == 0) {
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global_deviceatlas.cookiename = strdup(DA_COOKIENAME_DEFAULT);
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if (unlikely(global_deviceatlas.cookiename == NULL)) {
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ha_alert("deviceatlas : out of memory.\n");
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da_atlas_close(&global_deviceatlas.atlas);
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free(global_deviceatlas.atlasimgptr);
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da_fini();
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err_code |= ERR_ALERT | ERR_FATAL;
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goto out;
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}
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global_deviceatlas.cookienamelen = strlen(global_deviceatlas.cookiename);
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}
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global_deviceatlas.useragentid = da_atlas_header_evidence_id(&global_deviceatlas.atlas,
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"user-agent");
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{
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size_t hi;
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global_deviceatlas.maxhdrlen = 16;
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for (hi = 0; hi < global_deviceatlas.atlas.header_evidence_count; hi++) {
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size_t nl = strlen(global_deviceatlas.atlas.header_priorities[hi].name);
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if (nl > global_deviceatlas.maxhdrlen)
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global_deviceatlas.maxhdrlen = nl;
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}
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}
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if ((global_deviceatlas.atlasfd = shm_open(ATLASMAPNM, O_RDWR, 0660)) != -1) {
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global_deviceatlas.atlasmap = mmap(NULL, ATLASTOKSZ, PROT_READ | PROT_WRITE, MAP_SHARED, global_deviceatlas.atlasfd, 0);
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if (global_deviceatlas.atlasmap == MAP_FAILED) {
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close(global_deviceatlas.atlasfd);
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global_deviceatlas.atlasfd = -1;
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global_deviceatlas.atlasmap = NULL;
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} else {
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fprintf(stdout, "Deviceatlas : scheduling support enabled.\n");
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}
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}
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global_deviceatlas.daset = 1;
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fprintf(stdout, "Deviceatlas module loaded.\n");
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}
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out:
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return err_code;
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}
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static void deinit_deviceatlas(void)
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{
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if (global_deviceatlas.jsonpath != 0) {
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free(global_deviceatlas.jsonpath);
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}
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if (global_deviceatlas.daset == 1) {
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free(global_deviceatlas.cookiename);
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da_atlas_close(&global_deviceatlas.atlas);
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free(global_deviceatlas.atlasimgptr);
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da_fini();
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}
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if (global_deviceatlas.atlasfd != -1) {
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munmap(global_deviceatlas.atlasmap, ATLASTOKSZ);
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close(global_deviceatlas.atlasfd);
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}
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}
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static void da_haproxy_checkinst(void)
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{
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if (global_deviceatlas.atlasmap != 0) {
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char *base;
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base = (char *)global_deviceatlas.atlasmap;
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if (base[0] != 0) {
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FILE *jsonp;
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void *cnew;
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da_status_t status;
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size_t atlassz;
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char atlasp[ATLASTOKSZ] = {0};
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da_atlas_t inst;
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da_property_decl_t extraprops[1] = {{NULL, 0}};
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#ifdef USE_THREAD
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HA_SPIN_LOCK(OTHER_LOCK, &dadwsch_lock);
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if (base[0] == 0) {
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HA_SPIN_UNLOCK(OTHER_LOCK, &dadwsch_lock);
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return;
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}
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#endif
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strlcpy2(atlasp, base + sizeof(char), sizeof(atlasp));
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jsonp = fopen(atlasp, "r");
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if (jsonp == 0) {
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ha_alert("deviceatlas : '%s' json file has invalid path or is not readable.\n",
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atlasp);
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#ifdef USE_THREAD
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HA_SPIN_UNLOCK(OTHER_LOCK, &dadwsch_lock);
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#endif
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return;
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}
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status = da_atlas_compile(jsonp, da_haproxy_read, da_haproxy_seek,
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&cnew, &atlassz);
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fclose(jsonp);
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if (status == DA_OK) {
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if (da_atlas_open(&inst, extraprops, cnew, atlassz) == DA_OK) {
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inst.config.cache_size = global_deviceatlas.cachesize;
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da_atlas_close(&global_deviceatlas.atlas);
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free(global_deviceatlas.atlasimgptr);
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global_deviceatlas.atlasimgptr = cnew;
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global_deviceatlas.atlas = inst;
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{
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size_t hi;
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global_deviceatlas.maxhdrlen = 16;
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for (hi = 0; hi < inst.header_evidence_count; hi++) {
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size_t nl = strlen(inst.header_priorities[hi].name);
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if (nl > global_deviceatlas.maxhdrlen)
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global_deviceatlas.maxhdrlen = nl;
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}
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}
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base[0] = 0;
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ha_notice("deviceatlas : new instance, data file date `%s`.\n",
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da_getdatacreationiso8601(&global_deviceatlas.atlas));
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} else {
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ha_alert("deviceatlas : instance update failed.\n");
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free(cnew);
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}
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} else {
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free(cnew);
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}
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#ifdef USE_THREAD
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HA_SPIN_UNLOCK(OTHER_LOCK, &dadwsch_lock);
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#endif
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}
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}
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}
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static int da_haproxy(const struct arg *args, struct sample *smp, da_deviceinfo_t *devinfo)
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{
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struct buffer *tmp;
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da_propid_t prop;
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da_status_t status;
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da_type_t proptype;
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const char *propname;
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int i;
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tmp = get_trash_chunk();
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chunk_reset(tmp);
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propname = (const char *) args[0].data.str.area;
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i = 0;
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for (; propname != 0; i ++,
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propname = (const char *) args[i].data.str.area) {
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status = da_atlas_getpropid(&global_deviceatlas.atlas,
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propname, &prop);
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if (status != DA_OK) {
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chunk_appendf(tmp, "%c", global_deviceatlas.separator);
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continue;
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}
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if (unlikely(da_atlas_getproptype(&global_deviceatlas.atlas, prop, &proptype) != DA_OK)) {
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chunk_appendf(tmp, "%c", global_deviceatlas.separator);
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continue;
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}
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switch (proptype) {
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case DA_TYPE_BOOLEAN: {
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bool val;
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status = da_getpropboolean(devinfo, prop, &val);
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if (status == DA_OK) {
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chunk_appendf(tmp, "%d", val);
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}
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break;
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}
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case DA_TYPE_INTEGER:
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case DA_TYPE_NUMBER: {
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long val;
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status = da_getpropinteger(devinfo, prop, &val);
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if (status == DA_OK) {
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chunk_appendf(tmp, "%ld", val);
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}
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break;
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}
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case DA_TYPE_STRING: {
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const char *val;
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status = da_getpropstring(devinfo, prop, &val);
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if (status == DA_OK) {
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chunk_appendf(tmp, "%s", val);
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}
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break;
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}
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default:
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break;
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}
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chunk_appendf(tmp, "%c", global_deviceatlas.separator);
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}
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da_close(devinfo);
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if (tmp->data) {
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--tmp->data;
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tmp->area[tmp->data] = 0;
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}
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smp->data.u.str.area = tmp->area;
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smp->data.u.str.data = tmp->data;
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smp->data.type = SMP_T_STR;
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return 1;
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}
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static int da_haproxy_conv(const struct arg *args, struct sample *smp, void *private)
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{
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da_deviceinfo_t devinfo;
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da_status_t status;
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char useragentbuf[1024];
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int i;
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if (unlikely(global_deviceatlas.daset == 0) || smp->data.u.str.data == 0) {
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return 1;
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}
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da_haproxy_checkinst();
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i = smp->data.u.str.data > sizeof(useragentbuf) - 1 ? sizeof(useragentbuf) - 1 : smp->data.u.str.data;
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memcpy(useragentbuf, smp->data.u.str.area, i);
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useragentbuf[i] = 0;
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status = da_search(&global_deviceatlas.atlas, &devinfo,
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global_deviceatlas.useragentid, useragentbuf, 0);
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return status != DA_OK ? 0 : da_haproxy(args, smp, &devinfo);
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}
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#define DA_MAX_HEADERS 32
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static int da_haproxy_fetch(const struct arg *args, struct sample *smp, const char *kw, void *private)
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{
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da_evidence_t ev[DA_MAX_HEADERS];
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da_deviceinfo_t devinfo;
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da_status_t status;
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struct channel *chn;
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struct htx *htx;
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struct htx_blk *blk;
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char vbuf[DA_MAX_HEADERS][1024];
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int i, nbh = 0;
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if (unlikely(global_deviceatlas.daset == 0)) {
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return 0;
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}
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da_haproxy_checkinst();
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chn = (smp->strm ? &smp->strm->req : NULL);
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htx = smp_prefetch_htx(smp, chn, NULL, 1);
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if (unlikely(!htx))
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return 0;
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for (blk = htx_get_first_blk(htx); nbh < DA_MAX_HEADERS && blk; blk = htx_get_next_blk(htx, blk)) {
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size_t vlen;
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char *pval;
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da_evidence_id_t evid;
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enum htx_blk_type type;
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struct ist n, v;
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char hbuf[64];
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char tval[1024];
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type = htx_get_blk_type(blk);
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if (type == HTX_BLK_HDR) {
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n = htx_get_blk_name(htx, blk);
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v = htx_get_blk_value(htx, blk);
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} else if (type == HTX_BLK_EOH) {
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break;
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} else {
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continue;
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}
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if (n.len > global_deviceatlas.maxhdrlen || n.len >= sizeof(hbuf)) {
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continue;
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}
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|
|
memcpy(hbuf, n.ptr, n.len);
|
|
hbuf[n.len] = 0;
|
|
evid = -1;
|
|
i = v.len > sizeof(tval) - 1 ? sizeof(tval) - 1 : v.len;
|
|
memcpy(tval, v.ptr, i);
|
|
tval[i] = 0;
|
|
pval = tval;
|
|
vlen = i;
|
|
|
|
if (strcasecmp(hbuf, "Accept-Language") == 0) {
|
|
evid = da_atlas_accept_language_evidence_id(&global_deviceatlas.atlas);
|
|
} else if (strcasecmp(hbuf, "Cookie") == 0) {
|
|
char *p, *eval;
|
|
size_t pl;
|
|
|
|
eval = pval + vlen;
|
|
/**
|
|
* The cookie value, if it exists, is located between the current header's
|
|
* value position and the next one
|
|
*/
|
|
if (http_extract_cookie_value(pval, eval, global_deviceatlas.cookiename,
|
|
global_deviceatlas.cookienamelen, 1, &p, &pl) == NULL) {
|
|
continue;
|
|
}
|
|
|
|
vlen = pl;
|
|
pval = p;
|
|
evid = da_atlas_clientprop_evidence_id(&global_deviceatlas.atlas);
|
|
} else {
|
|
evid = da_atlas_header_evidence_id(&global_deviceatlas.atlas, hbuf);
|
|
}
|
|
|
|
if (evid == -1) {
|
|
continue;
|
|
}
|
|
|
|
i = vlen > sizeof(vbuf[nbh]) - 1 ? sizeof(vbuf[nbh]) - 1 : vlen;
|
|
memcpy(vbuf[nbh], pval, i);
|
|
vbuf[nbh][i] = 0;
|
|
ev[nbh].key = evid;
|
|
ev[nbh].value = vbuf[nbh];
|
|
++ nbh;
|
|
}
|
|
|
|
status = da_searchv(&global_deviceatlas.atlas, &devinfo,
|
|
ev, nbh);
|
|
|
|
return status != DA_OK ? 0 : da_haproxy(args, smp, &devinfo);
|
|
}
|
|
|
|
static struct cfg_kw_list dacfg_kws = {{ }, {
|
|
{ CFG_GLOBAL, "deviceatlas-json-file", da_json_file },
|
|
{ CFG_GLOBAL, "deviceatlas-log-level", da_log_level },
|
|
{ CFG_GLOBAL, "deviceatlas-property-separator", da_property_separator },
|
|
{ CFG_GLOBAL, "deviceatlas-properties-cookie", da_properties_cookie },
|
|
{ CFG_GLOBAL, "deviceatlas-cache-size", da_cache_size },
|
|
{ 0, NULL, NULL },
|
|
}};
|
|
|
|
INITCALL1(STG_REGISTER, cfg_register_keywords, &dacfg_kws);
|
|
|
|
/* Note: must not be declared <const> as its list will be overwritten */
|
|
static struct sample_fetch_kw_list fetch_kws = {ILH, {
|
|
{ "da-csv-fetch", da_haproxy_fetch, ARG12(1,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
|
|
{ NULL, NULL, 0, 0, 0 },
|
|
}};
|
|
|
|
INITCALL1(STG_REGISTER, sample_register_fetches, &fetch_kws);
|
|
|
|
/* Note: must not be declared <const> as its list will be overwritten */
|
|
static struct sample_conv_kw_list conv_kws = {ILH, {
|
|
{ "da-csv-conv", da_haproxy_conv, ARG12(1,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR), NULL, SMP_T_STR, SMP_T_STR },
|
|
{ NULL, NULL, 0, 0, 0 },
|
|
}};
|
|
|
|
static void da_haproxy_register_build_options()
|
|
{
|
|
char *ptr = NULL;
|
|
|
|
#ifdef DATLAS_DA_DUMMY_LIBRARY
|
|
memprintf(&ptr, "Built with DeviceAtlas support (dummy library only).");
|
|
#else
|
|
memprintf(&ptr, "Built with DeviceAtlas support (library version %u.%u).", DATLAS_DA_MAJOR, DATLAS_DA_MINOR);
|
|
#endif
|
|
hap_register_build_opts(ptr, 1);
|
|
}
|
|
|
|
INITCALL1(STG_REGISTER, sample_register_convs, &conv_kws);
|
|
|
|
REGISTER_POST_CHECK(init_deviceatlas);
|
|
REGISTER_POST_DEINIT(deinit_deviceatlas);
|
|
INITCALL0(STG_REGISTER, da_haproxy_register_build_options);
|